(js) Cleanup of "catch" for promises

UI/WebServerResources/js/Contacts/AddressBooksController.js

@@ -265,8 +265,6 @@
             // Refresh list instance
             srcAddressBook.init(vm.addressbook.$omit());
             $mdDialog.hide();
-          }, function() {
-            // TODO handle error
           });
         }
 

UI/WebServerResources/js/Mailer/Message.service.js

@@ -461,8 +461,6 @@
         _this.editable.attachmentAttrs = _.filter(_this.editable.attachmentAttrs, function(attachment) {
           return attachment.filename != filename;
         });
-      }, function() {
-        // TODO: show toast
       });
     });
   };