Models: Remove board from starred list

This will fix the starred counter. If the board is not public, the user
is unable to see the board and remove it from the list of starred
boards.

models/boards.js

@@ -494,6 +494,18 @@ if (Meteor.isServer) {
 
         const board = Boards._transform(doc);
         board.setWatcher(memberId, false);
+
+        // Remove board from users starred list
+        if (!board.isPublic()) {
+          Users.update(
+            memberId,
+            {
+              $pull: {
+                'profile.starredBoards': boardId,
+              },
+            }
+          );
+        }
       });
     }
   });