fix(@schematics/angular): Default library service should be providedIn root

Author: Brocco

packages/schematics/angular/library/index.ts

@@ -218,7 +218,6 @@ export default function (options: LibraryOptions): Rule {
         name: name,
         flat: true,
         path: sourceDir,
-        module: `${name}.module.ts`,
       }),
     ])(host, context);
   };