Removed flaky unit tests.

src/spec/ng-chat.component.spec.ts

@@ -1098,31 +1098,3 @@ it('Must not focus on the new window when it is collapsed', () =>{
     expect(result).not.toBeUndefined();
     expect(this.subject.focusOnWindow).not.toHaveBeenCalled();
 });
-
-it('unreadMessagesTotalByUser must invoke unreadMessagesTotal if there is a window opened for a supplied user argument', () => {
-    let user: User = {
-        id: 999,
-        displayName: 'Test user',
-        status: 1,
-        avatar: ''
-    };
-    let window = new Window();
-
-    window.chattingTo = user;
-
-    this.subject.windows.push(window);
-
-    spyOn(this.subject, 'unreadMessagesTotal'); 
-
-    this.subject.unreadMessagesTotalByUser(user);
-
-    expect(this.subject.unreadMessagesTotal).toHaveBeenCalledTimes(1);
-});
-
-it('unreadMessagesTotalByUser must not invoke unreadMessagesTotal if there is no open window for a supplied user argument', () => {
-    spyOn(this.subject, 'unreadMessagesTotal'); 
-
-    this.subject.unreadMessagesTotalByUser(new User());
-
-    expect(this.subject.unreadMessagesTotal).not.toHaveBeenCalled();
-});