fix(common): fix local storage remove method

.huskyrc

@@ -4,6 +4,6 @@
     "pre-commit": "lint-staged",
     "pre-push": "node -e \"console.log('Checking with prettier if files are correctly formatted. Errors will be listed below.')\" \
     && prettier libs/**/*.{json,css,scss,js,ts,html} --list-different \
-    && npm run affected:lint -- --base=develop --head=HEAD"
+    && npm run affected:lint -- --base=origin/master --head=HEAD"
   }
 }

libs/common/src/lib/local-storage/src/local-storage-client.ts

@@ -1,4 +1,4 @@
-import { EMPTY, Observable, of } from 'rxjs';
+import { Observable, of } from 'rxjs';
 import { EntityNotFoundError, NoEntityIdError } from './errors';
 
 export class LocalStorageClient {
@@ -35,11 +35,11 @@ export class LocalStorageClient {
    * @param {string} collection The name of the collection from which to remove the entity.
    * @param {string | number} id Entity ID.
    */
-  static remove(collection: string, id: string | number): Observable<void> {
+  static remove(collection: string, id: string | number): Observable<null> {
     const entities = LocalStorageClient.getCollection(collection);
     LocalStorageClient.setCollection(collection, entities.filter(entity => entity.id !== id));
 
-    return EMPTY;
+    return of(null);
   }
 
   /**