test: don't install after generating lib

Author: filipesilva

tests/e2e/tests/generate/library/library-basic.ts

@@ -1,12 +1,11 @@
-import { ng, silentNpm } from '../../../utils/process';
+import { ng } from '../../../utils/process';
 import { expectFileToMatch } from '../../../utils/fs';
 import { useCIChrome } from '../../../utils/project';
 
 export default function () {
   return ng('generate', 'library', 'my-lib')
     .then(() => expectFileToMatch('angular.json', /\"my-lib\":/))
     .then(() => useCIChrome('projects/my-lib'))
-    .then(() => silentNpm('install'))
     .then(() => ng('build', 'my-lib'))
     .then(() => ng('test', 'my-lib', '--watch=false'));
 }

tests/e2e/tests/generate/library/library-consumption.ts

@@ -1,9 +1,8 @@
-import { ng, silentNpm } from '../../../utils/process';
+import { ng } from '../../../utils/process';
 import { writeFile } from '../../../utils/fs';
 
 export default function () {
   return ng('generate', 'library', 'my-lib')
-    .then(() => silentNpm('install'))
     .then(() => ng('build', 'my-lib'))
     .then(() => writeFile('./src/app/app.module.ts', `
       import { BrowserModule } from '@angular/platform-browser';