remove test release following successful run

Author: alex-courtis

.github/workflows/luarocks.yml

@@ -4,7 +4,6 @@ on:
     tags:
       - 'v[0-9]+.[0-9]+.[0-9]+'
   workflow_dispatch:
-  pull_request: # Will test luarocks installation on PR, without uploading
 jobs:
   luarocks-upload:
     runs-on: ubuntu-latest