Cleanup redundant/useless code

src/app/components/shared/comment-list/comment-list.component.html

 <mat-toolbar >List of Questions</mat-toolbar>
-<mat-card class="outer-card">
+<mat-card>
     <app-comment *ngFor="let current of comments" [comment]="current"> </app-comment>
 </mat-card>

src/app/components/shared/comment-list/comment-list.component.scss

 mat-card {
   margin-bottom: 20px;
   background-color: #b2ebf2;
-}
-
-mat-card-content > :first-child {
-  margin-top: 20px;
+  border-radius: 8px;
 }
 
 mat-toolbar {
@@ -12,11 +9,3 @@ mat-toolbar {
   margin-bottom: 20px;
   background-color: #bbdefb;
 }
-
-.outer-card {
-  border-radius: 8px;
-}
-
-.btn-right {
-  float: right;
-}

src/app/components/shared/comment-list/comment-list.component.ts

 import { Component, OnInit } from '@angular/core';
-import { ActivatedRoute } from '@angular/router';
-import { Location } from '@angular/common';
 import { Comment } from '../../../models/comment';
 import { CommentService } from '../../../services/http/comment.service';
-import { RoomService } from '../../../services/http/room.service';
-import { NotificationService } from '../../../services/util/notification.service';
-import { AuthenticationService } from '../../../services/http/authentication.service';
-import { UserRole } from '../../../models/user-roles.enum';
-import { User } from '../../../models/user';
 import { TranslateService } from '@ngx-translate/core';
 import { LanguageService } from '../../../services/util/language.service';
 
@@ -17,28 +10,17 @@ import { LanguageService } from '../../../services/util/language.service';
   styleUrls: ['./comment-list.component.scss']
 })
 export class CommentListComponent implements OnInit {
-  userRole: UserRole;
-  user: User;
   comments: Comment[];
   isLoading = true;
   roomId: string;
-  roomShortId: string;
 
-  constructor(protected authenticationService: AuthenticationService,
-              private route: ActivatedRoute,
-              private roomService: RoomService,
-              private location: Location,
-              private commentService: CommentService,
-              private notification: NotificationService,
+  constructor(private commentService: CommentService,
               private translateService: TranslateService,
               protected langService: LanguageService) {
     langService.langEmitter.subscribe(lang => translateService.use(lang));
   }
 
   ngOnInit() {
-    this.userRole = this.authenticationService.getRole();
-    this.user = this.authenticationService.getUser();
-    this.roomShortId = this.route.snapshot.paramMap.get('roomId');
     this.roomId = localStorage.getItem(`roomId`);
     this.getComments();
     this.translateService.use(localStorage.getItem('currentLang'));

src/app/components/shared/comment/comment.component.scss

@@ -18,10 +18,6 @@ mat-icon {
   color: white;
 }
 
-.incorrect-icon {
-  color: white;
-}
-
 .correct-icon {
   color: green;
 }

src/app/components/shared/comment/comment.component.ts

 import { Component, Input, OnInit } from '@angular/core';
 import { Comment } from '../../../models/comment';
 import { UserRole } from '../../../models/user-roles.enum';
-import { User } from '../../../models/user';
 import { AuthenticationService } from '../../../services/http/authentication.service';
 import { ActivatedRoute } from '@angular/router';
 import { Location } from '@angular/common';
@@ -18,7 +17,6 @@ import { LanguageService } from '../../../services/util/language.service';
 export class CommentComponent implements OnInit {
   @Input() comment: Comment;
   userRole: UserRole;
-  user: User;
   isLoading = true;
 
   constructor(protected authenticationService: AuthenticationService,
@@ -32,7 +30,6 @@ export class CommentComponent implements OnInit {
 
   ngOnInit() {
     this.userRole = this.authenticationService.getRole();
-    this.user = this.authenticationService.getUser();
     this.translateService.use(localStorage.getItem('currentLang'));
   }