remove removed column on tests fixtures

Author: lunny

models/fixtures/repo_unit.yml

@@ -226,38 +226,33 @@
   id: 33
   repo_id: 16
   type: 1
-  index: 0
   config: "{}"
   created_unix: 946684810
 
 -
   id: 34
   repo_id: 16
   type: 2
-  index: 1
   config: "{\"EnableTimetracker\":false,\"AllowOnlyContributorsToTrackTime\":false}"
   created_unix: 946684810
 
 -
   id: 35
   repo_id: 16
   type: 3
-  index: 2
   config: "{}"
   created_unix: 946684810
 
 -
   id: 36
   repo_id: 16
   type: 4
-  index: 3
   config: "{}"
   created_unix: 946684810
 
 -
   id: 37
   repo_id: 16
   type: 5
-  index: 4
   config: "{}"
   created_unix: 946684810