Update extensions.json

Undoing previous update to test committer access.

Author: kineticsquid

extensions.json

@@ -11,9 +11,6 @@
   },
   "adpyke.codesnap": {
     "repository": "https://github.com/kufii/CodeSnap"
-  },
-    "adpyke.codesnap": {
-    "repository": "https://github.com/kufii/CodeSnap"
   },
   "adrianhumphreys.silverstripe": {
     "repository": "https://github.com/adrhumphreys/vscode-silverstripe",