remove: redundant ngcc compilation scripts

npm/ng-packs/package.json

@@ -29,8 +29,6 @@
     "workspace-generator": "nx workspace-generator",
     "dep-graph": "nx dep-graph",
     "help": "nx help",
-    "compile:ivy": "yarn ngcc --properties es2020 browser module main --first-only --create-ivy-entry-points --tsconfig './tsconfig.prod.json' --source node_modules",
-    "postinstall2": "node ./decorate-angular-cli.js && yarn compile:ivy",
     "build:schematics": "cd scripts && yarn && yarn build:schematics && cd ..",
     "dev:schematics": "tsc -p packages/schematics/tsconfig.json -w",
     "mock:schematics": "cd scripts/mock-schematic && yarn && yarn start",

npm/ng-packs/scripts/build.ts

@@ -4,7 +4,6 @@ import fse from 'fs-extra';
 
 (async () => {
   program.option('-i, --noInstall', 'skip updating package.json and installation', false);
-  program.option('-c, --skipNgcc', 'skip ngcc', false);
 
   program.parse(process.argv);
 
@@ -66,8 +65,6 @@ import fse from 'fs-extra';
       ],
       { stdout: 'inherit', cwd: '../' },
     );
-
-    if (!program.skipNgcc) await execa('yarn', ['compile:ivy'], { stdout: 'inherit', cwd: '../' });
   } catch (error) {
     console.error(error.stderr);
     process.exit(1);