Remove unused puppetlabs-concat dependency

Fixes: 2cd4362 ("Removed unused rhsm_reconfigure_script")

Author: ekohl

.fixtures.yml

@@ -1,6 +1,5 @@
 fixtures:
   repositories:
-    concat:            "https://github.com/puppetlabs/puppetlabs-concat"
     extlib:            "https://github.com/voxpupuli/puppet-extlib"
     foreman:           "https://github.com/theforeman/puppet-foreman"
     redis:             "https://github.com/voxpupuli/puppet-redis"

metadata.json

@@ -15,10 +15,6 @@
     {
       "name": "puppet-extlib",
       "version_requirement": ">= 3.0.0 < 7.0.0"
-    },
-    {
-      "name": "puppetlabs-concat",
-      "version_requirement": ">= 1.0.0 < 8.0.0"
     }
   ],
   "requirements": [