Merge pull request #971 from chapterjason/patch-1

Remove unnecessary duplicated property in block_manager config.js

src/block_manager/config/config.js

@@ -3,7 +3,5 @@ module.exports = {
   // With the empty value, nothing will be rendered
   appendTo: '',
 
-  blocks: [],
+  blocks: []
-
-  appendTo: ''
 };