Ivy: Remove entryComponents property from @NgModule decorator in @angular/core migrations

🚀 feature request

Relevant Package

This feature request is for @angular/core

The relevant migrations are currently located at: https://github.com/angular/angular/tree/master/packages/core/schematics/migrations

Description

Updating to Angular version 9 performs several post-install migrations using schematics. These are incredible, and very much appreciated. ❤️

This feature request is to add an additional migration when updating to Angular v9 using the ng update command to remove the entryComponents property in all @NgModule() decorators since the code is unnecessary after updating to Angular version 9 with Ivy.

Describe the solution you’d like

Remove entryComponents property in @NgModule() decorators using schematics.

Describe alternatives you’ve considered

Alternative include:

1. Manually remove entryComponents after updating.
2. Leave the entryComponents after updating since it does not cause an errors or side effects.
3. Create a schematic separate from the @angular/core module to perform the migration for those that desire this functionality.

[JoostK]

Implemented in #44322.

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