diff --git a/.github/scripts/hermetic_library_generation.sh b/.github/scripts/hermetic_library_generation.sh
deleted file mode 100644
index 6c3f22d8f9..0000000000
--- a/.github/scripts/hermetic_library_generation.sh
+++ /dev/null
@@ -1,117 +0,0 @@
-#!/bin/bash
-set -e
-# This script should be run at the root of the repository.
-# This script is used to, when a pull request changes the generation
-# configuration (generation_config.yaml by default):
-# 1. Find whether the last commit in this pull request contains changes to
-# the generation configuration and exit early if it doesn't have such a change
-# since the generation result would be the same.
-# 2. Compare generation configurations in the current branch (with which the
-# pull request associated) and target branch (into which the pull request is
-# merged);
-# 3. Generate changed libraries using library_generation image;
-# 4. Commit the changes to the pull request, if any.
-# 5. Edit the PR body with generated pull request description, if applicable.
-
-# The following commands need to be installed before running the script:
-# 1. git
-# 2. gh
-# 3. docker
-
-# The parameters of this script is:
-# 1. target_branch, the branch into which the pull request is merged.
-# 2. current_branch, the branch with which the pull request is associated.
-# 3. [optional] generation_config, the path to the generation configuration,
-# the default value is generation_config.yaml in the repository root.
-while [[ $# -gt 0 ]]; do
-key="$1"
-case "${key}" in
-  --target_branch)
-    target_branch="$2"
-    shift
-    ;;
-  --current_branch)
-    current_branch="$2"
-    shift
-    ;;
-  --generation_config)
-    generation_config="$2"
-    shift
-    ;;
-  *)
-    echo "Invalid option: [$1]"
-    exit 1
-    ;;
-esac
-shift
-done
-
-if [ -z "${target_branch}" ]; then
-  echo "missing required argument --target_branch"
-  exit 1
-fi
-
-if [ -z "${current_branch}" ]; then
-  echo "missing required argument --current_branch"
-  exit 1
-fi
-
-if [ -z "${generation_config}" ]; then
-  generation_config=generation_config.yaml
-  echo "Using default generation config: ${generation_config}"
-fi
-
-workspace_name="/workspace"
-baseline_generation_config="baseline_generation_config.yaml"
-message="chore: generate libraries at $(date)"
-
-git checkout "${target_branch}"
-git checkout "${current_branch}"
-# if the last commit doesn't contain changes to generation configuration,
-# do not generate again as the result will be the same.
-change_of_last_commit="$(git diff-tree --no-commit-id --name-only HEAD~1..HEAD -r)"
-if [[ ! ("${change_of_last_commit}" == *"${generation_config}"*) ]]; then
-    echo "The last commit doesn't contain any changes to the generation_config.yaml, skipping the whole generation process." || true
-    exit 0
-fi
-# copy generation configuration from target branch to current branch.
-git show "${target_branch}":"${generation_config}" > "${baseline_generation_config}"
-config_diff=$(diff "${generation_config}" "${baseline_generation_config}" || true)
-
-# parse image tag from the generation configuration.
-image_tag=$(grep "gapic_generator_version" "${generation_config}" | cut -d ':' -f 2 | xargs)
-
-# run hermetic code generation docker image.
-docker run \
-  --rm \
-  -u "$(id -u):$(id -g)" \
-  -v "$(pwd):${workspace_name}" \
-  gcr.io/cloud-devrel-public-resources/java-library-generation:"${image_tag}" \
-  --baseline-generation-config-path="${workspace_name}/${baseline_generation_config}" \
-  --current-generation-config-path="${workspace_name}/${generation_config}"
-
-
-# commit the change to the pull request.
-if [[ $(basename $(pwd)) == "google-cloud-java" ]]; then
-  git add java-* pom.xml gapic-libraries-bom/pom.xml versions.txt
-else
-  # The image leaves intermediate folders and files it works with. Here we remove them
-  rm -rdf output googleapis "${baseline_generation_config}"
-  git add --all -- ':!pr_description.txt'
-fi
-changed_files=$(git diff --cached --name-only)
-if [[ "${changed_files}" == "" ]]; then
-    echo "There is no generated code change with the generation config change ${config_diff}."
-    echo "Skip committing to the pull request."
-    exit 0
-fi
-
-echo "Configuration diff:"
-echo "${config_diff}"
-git commit -m "${message}"
-git push
-# set pr body if pr_description.txt is generated.
-if [[ -f "pr_description.txt" ]]; then
-  pr_num=$(gh pr list -s open -H "${current_branch}" -q . --json number | jq ".[] | .number")
-  gh pr edit "${pr_num}" --body "$(cat pr_description.txt)"
-fi