* [iOS] delete useless code about log

Author: doumafang

ios/sdk/WeexSDK/Sources/Component/RecycleList/WXCellSlotComponent.mm

@@ -78,9 +78,6 @@ - (void)triggerLayout
         renderPageSize.first = self.weexInstance.frame.size.width;
         renderPageSize.second = self.weexInstance.frame.size.height;
         self.flexCssNode->calculateLayout(renderPageSize);
-        if ([WXLog logLevel] >= WXLogLevelDebug) {
-            
-        }
     }
     NSMutableSet<WXComponent *> *dirtyComponents = [NSMutableSet set];
     [self _calculateFrameWithSuperAbsolutePosition:CGPointZero gatherDirtyComponents:dirtyComponents];