Remove FullCLR code

This project started as a fork of the Windows PowerShell 5.1 code base. As we’ve progressed towards a PowerShell Core 6.0 release and with the capability of dotnet core 2.0 and dotnet std 2.0 being able to load dotnet framework 4.5.1+ assemblies that are compatible with dotnet std 2.0, we can simplify the code base by removing the legacy FullCLR code so that we no longer have #ifdefs for CORECLR (and !CORECLR). This was discussed and approved by @PowerShell/powershell-committee. When reviewing the code, do not blindly just remove the FullCLR code, but validate if updates to .NET Core means using the FullCLR code instead of the limited .NET Core code.

Remaining #if [!]CORECLR usages

param($path = "../repos/PowerShell")

$sources = Get-ChildItem -Recurse -Path $path -Include *.cs
foreach ($source in $sources) {
    $content = Get-Content $source -Raw
    if ($content -match "#if CORECLR" -or $content -match "#if !CORECLR") {
        $source.FullName
    }
}

src/Microsoft.PowerShell.Commands.Diagnostics/CoreCLR/Stubs.cs src/Microsoft.PowerShell.Commands.Diagnostics/CommonUtils.cs src/Microsoft.PowerShell.Commands.Diagnostics/ExportCounterCommand.cs src/Microsoft.PowerShell.Commands.Diagnostics/GetCounterCommand.cs src/Microsoft.PowerShell.Commands.Diagnostics/ImportCounterCommand.cs src/Microsoft.PowerShell.Commands.Diagnostics/NewWinEventCommand.cs src/Microsoft.PowerShell.Commands.Utility/commands/utility/new-object.cs src/Microsoft.PowerShell.LocalAccounts/LocalAccounts/Extensions.cs src/Microsoft.PowerShell.LocalAccounts/LocalAccounts/Sam.cs src/Microsoft.PowerShell.Security/security/AclCommands.cs src/Microsoft.PowerShell.Security/security/CertificateProvider.cs src/Microsoft.PowerShell.Security/security/ExecutionPolicyCommands.cs src/Microsoft.WSMan.Management/CredSSP.cs src/Microsoft.WSMan.Management/Interop.cs src/Microsoft.WSMan.Management/WsManHelper.cs src/System.Management.Automation/cimSupport/cmdletization/xml/CoreCLR/cmdlets-over-objects.xmlSerializer.autogen.cs src/System.Management.Automation/cimSupport/cmdletization/ScriptWriter.cs src/System.Management.Automation/CoreCLR/CorePsAssemblyLoadContext.cs src/System.Management.Automation/DscSupport/CimDSCParser.cs src/System.Management.Automation/engine/debugger/debugger.cs src/System.Management.Automation/engine/hostifaces/Command.cs src/System.Management.Automation/engine/hostifaces/Connection.cs src/System.Management.Automation/engine/hostifaces/ConnectionBase.cs src/System.Management.Automation/engine/hostifaces/HostUtilities.cs src/System.Management.Automation/engine/hostifaces/InternalHost.cs src/System.Management.Automation/engine/hostifaces/LocalConnection.cs src/System.Management.Automation/engine/hostifaces/LocalPipeline.cs src/System.Management.Automation/engine/hostifaces/Parameter.cs src/System.Management.Automation/engine/hostifaces/PowerShell.cs src/System.Management.Automation/engine/hostifaces/PowerShellProcessInstance.cs src/System.Management.Automation/engine/hostifaces/RunspacePool.cs src/System.Management.Automation/engine/hostifaces/RunspacePoolInternal.cs src/System.Management.Automation/engine/interpreter/ControlFlowInstructions.cs src/System.Management.Automation/engine/Modules/ModuleCmdletBase.cs src/System.Management.Automation/engine/parser/Compiler.cs src/System.Management.Automation/engine/parser/FusionAssemblyIdentity.cs src/System.Management.Automation/engine/parser/GlobalAssemblyCache.cs src/System.Management.Automation/engine/parser/Parser.cs src/System.Management.Automation/engine/parser/TypeResolver.cs src/System.Management.Automation/engine/remoting/client/remoterunspace.cs src/System.Management.Automation/engine/remoting/commands/CustomShellCommands.cs src/System.Management.Automation/engine/remoting/commands/EnterPSHostProcessCommand.cs src/System.Management.Automation/engine/remoting/commands/remotingcommandutil.cs src/System.Management.Automation/engine/remoting/commands/ResumeJob.cs src/System.Management.Automation/engine/remoting/commands/SuspendJob.cs src/System.Management.Automation/engine/remoting/common/WireDataFormat/EncodeAndDecode.cs src/System.Management.Automation/engine/remoting/common/RemoteSessionNamedPipe.cs src/System.Management.Automation/engine/remoting/common/RunspaceConnectionInfo.cs src/System.Management.Automation/engine/remoting/common/throttlemanager.cs src/System.Management.Automation/engine/remoting/fanin/BaseTransportManager.cs src/System.Management.Automation/engine/remoting/fanin/InitialSessionStateProvider.cs src/System.Management.Automation/engine/remoting/fanin/WSManPlugin.cs src/System.Management.Automation/engine/remoting/fanin/WSManPluginFacade.cs src/System.Management.Automation/engine/remoting/fanin/WSManTransportManager.cs src/System.Management.Automation/engine/remoting/server/OutOfProcServerMediator.cs src/System.Management.Automation/engine/remoting/server/ServerPowerShellDriver.cs src/System.Management.Automation/engine/remoting/server/serverremotesession.cs src/System.Management.Automation/engine/remoting/server/ServerRunspacePoolDriver.cs src/System.Management.Automation/engine/remoting/server/ServerSteppablePipelineDriver.cs src/System.Management.Automation/engine/Attributes.cs src/System.Management.Automation/engine/CommandDiscovery.cs src/System.Management.Automation/engine/CommandMetadata.cs src/System.Management.Automation/engine/ExecutionContext.cs src/System.Management.Automation/engine/GetEvent_Types_Ps1Xml.cs src/System.Management.Automation/engine/InitialSessionState.cs src/System.Management.Automation/engine/LanguagePrimitives.cs src/System.Management.Automation/engine/MshCommandRuntime.cs src/System.Management.Automation/engine/pipeline.cs src/System.Management.Automation/engine/serialization.cs src/System.Management.Automation/engine/Types_Ps1Xml.cs src/System.Management.Automation/engine/Utils.cs src/System.Management.Automation/help/HelpSystem.cs src/System.Management.Automation/help/UpdatableHelpCommandBase.cs src/System.Management.Automation/help/UpdatableHelpSystem.cs src/System.Management.Automation/help/UpdateHelpCommand.cs src/System.Management.Automation/logging/MshLog.cs src/System.Management.Automation/namespaces/FileSystemProvider.cs src/System.Management.Automation/namespaces/RegistryProvider.cs src/System.Management.Automation/namespaces/Win32Native.cs src/System.Management.Automation/security/SecureStringHelper.cs src/System.Management.Automation/singleshell/config/MshSnapinInfo.cs src/System.Management.Automation/utils/ClrFacade.cs src/System.Management.Automation/utils/StructuredTraceSource.cs

[rjmholt]

EDIT: Moved the list into the top-level issue description at the request of @daxian-dbw.

[big list used to be here]

[iSazonov]

Search results for #if .*CORECLR - 543 results in 186 files.

Now search results for #if .*CORECLR - 174 results in 70 files.