Removing like from core action summary

graph/resolvers/action_summary.js

@@ -3,8 +3,6 @@ const ActionSummary = {
     switch (action_type) {
     case 'FLAG':
       return 'FlagActionSummary';
-    case 'LIKE':
-      return 'LikeActionSummary';
     case 'DONTAGREE':
       return 'DontAgreeActionSummary';
     }