fix: remove timezone from duration

Author: nalves599

src/app/user/workshops/workshop-status-element.component.html

@@ -18,7 +18,7 @@ <h4 class="name">{{workshop.name}}</h4>
         </div>
         <div *ngIf="workshop.duration" class="padded">
           <p>
-            <i class="fa fa-clock-o"></i> {{workshop.duration | date:'h:mm':'+0000'}}
+            <i class="fa fa-clock-o"></i> {{workshop.duration | date:'h:mm'}}
           </p>
         </div>
         <div *ngIf="workshop.place">

src/app/user/workshops/workshop/workshop.component.html

@@ -18,7 +18,7 @@ <h4 class="name">{{workshop.name}}</h4>
         </div>
         <div *ngIf="workshop.duration" class="padded">
           <p>
-            <i class="fa fa-clock-o"></i> {{workshop.duration | date:'h:mm':'+0000'}} </p>
+            <i class="fa fa-clock-o"></i> {{workshop.duration | date:'h:mm'}} </p>
         </div>
         <div *ngIf="workshop.place">
           <p>