Remove wrongly added column on migration test fixtures

Author: lunny

models/migrations/fixtures/Test_DeleteOrphanedIssueLabels/label.yml

@@ -4,7 +4,6 @@
   org_id: 0
   name: label1
   color: '#abcdef'
-  exclusive: false
   num_issues: 2
   num_closed_issues: 0
 
@@ -14,7 +13,6 @@
   org_id: 0
   name: label2
   color: '#000000'
-  exclusive: false
   num_issues: 1
   num_closed_issues: 1
 -
@@ -23,7 +21,6 @@
   org_id:  3
   name: orglabel3
   color: '#abcdef'
-  exclusive: false
   num_issues: 0
   num_closed_issues: 0
 
@@ -33,7 +30,6 @@
   org_id: 3
   name: orglabel4
   color: '#000000'
-  exclusive: false
   num_issues: 1
   num_closed_issues: 0
 
@@ -43,6 +39,5 @@
   org_id: 0
   name: pull-test-label
   color: '#000000'
-  exclusive: false
   num_issues: 0
   num_closed_issues: 0