fix schematics building erros

npm/ng-packs/nx/ng-packs/packages/schematics/src/lib/schematics.module.ts

@@ -1,7 +0,0 @@
-import { NgModule } from '@angular/core';
-import { CommonModule } from '@angular/common';
-
-@NgModule({
-  imports: [CommonModule],
-})
-export class SchematicsModule {}

npm/ng-packs/nx/ng-packs/scripts/build-schematics.ts

@@ -56,6 +56,8 @@ async function* copyPackageFiles(packageName: string) {
   try {
     await fse.remove(`../dist/packages/${PACKAGE_TO_BUILD}`);
 
+    await execa('yarn', ['install'], { cwd: '../packages/schematics' });
+
     await execa(
       'tsc',
       [