Revert "api_refs.yaml: Temporary targets phpdoc-5.0"

This reverts commit 9a78c4f.

Author: adriendupuis

.github/workflows/api_refs.yaml

@@ -20,11 +20,6 @@ jobs:
                   version="${{ inputs.version }}"
                   base_branch="$(echo $version | sed 's/v\(.*\..*\)\..*/\1/')"
                   work_branch="api_refs_$version"
-                  #TMP
-                  if [[ '5.0' == $base_branch ]]; then
-                    base_branch='phpdoc-5.0'
-                  fi
-                  #/TMP
                   echo "version=$version" >> "$GITHUB_OUTPUT"
                   echo "base_branch=$base_branch" >> "$GITHUB_OUTPUT"
                   echo "work_branch=$work_branch" >> "$GITHUB_OUTPUT"