remove protocol versions (#4317)

Author: megan07

.github/workflows/release.yml

@@ -8,11 +8,6 @@ on:
 permissions:
   contents: write
 
-
-env:
-  PROTOCOL_VERSION: "5.0"
-  PROTOCOL_VERSIONS: "5.0"
-
 jobs:
   go-version:
     runs-on: ubuntu-latest