diff --git a/.circleci/config.yml b/.circleci/config.yml
index c0bb66ff6..c6727efeb 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -114,7 +114,6 @@ jobs:
     steps:
       - checkout
       - run: ./scripts/sync_repo_files.sh
-      - run: ./scripts/sync_codemirror.sh
 
 workflows:
   version: 2
diff --git a/scripts/sync_codemirror.sh b/scripts/sync_codemirror.sh
deleted file mode 100755
index 83cdd349c..000000000
--- a/scripts/sync_codemirror.sh
+++ /dev/null
@@ -1,135 +0,0 @@
-#!/usr/bin/env bash
-# vim: ts=2 et
-# Setting -x is absolutely forbidden as it could leak the GitHub token.
-set -uo pipefail
-
-# GITHUB_TOKEN required scope: repo.repo_public
-
-git_mail="prometheus-team@googlegroups.com"
-git_user="prombot"
-branch="repo_sync_codemirror"
-commit_msg="Update codemirror"
-pr_title="Synchronize codemirror from prometheus/prometheus"
-pr_msg="Propagating changes from prometheus/prometheus default branch."
-target_repo="prometheus/codemirror-promql"
-source_path="web/ui/module/codemirror-promql"
-
-color_red='\e[31m'
-color_green='\e[32m'
-color_yellow='\e[33m'
-color_none='\e[0m'
-
-echo_red() {
-  echo -e "${color_red}$@${color_none}" 1>&2
-}
-
-echo_green() {
-  echo -e "${color_green}$@${color_none}" 1>&2
-}
-
-echo_yellow() {
-  echo -e "${color_yellow}$@${color_none}" 1>&2
-}
-
-GITHUB_TOKEN="${GITHUB_TOKEN:-}"
-if [ -z "${GITHUB_TOKEN}" ]; then
-  echo_red 'GitHub token (GITHUB_TOKEN) not set. Terminating.'
-  exit 1
-fi
-
-# List of files that should not be synced.
-excluded_files="CODE_OF_CONDUCT.md LICENSE Makefile.common SECURITY.md .yamllint MAINTAINERS.md"
-excluded_dirs=".github .circleci"
-
-# Go to the root of the repo
-cd "$(git rev-parse --show-cdup)" || exit 1
-
-source_dir="$(pwd)/${source_path}"
-
-tmp_dir="$(mktemp -d)"
-trap 'rm -rf "${tmp_dir}"' EXIT
-
-## Internal functions
-github_api() {
-  local url
-  url="https://api.github.com/${1}"
-  shift 1
-  curl --retry 5 --silent --fail -u "${git_user}:${GITHUB_TOKEN}" "${url}" "$@"
-}
-
-get_default_branch() {
-  github_api "repos/${1}" 2> /dev/null |
-    jq -r .default_branch
-}
-
-push_branch() {
-  local git_url
-  git_url="https://${git_user}:${GITHUB_TOKEN}@github.com/${1}"
-  # stdout and stderr are redirected to /dev/null otherwise git-push could leak
-  # the token in the logs.
-  # Delete the remote branch in case it was merged but not deleted.
-  git push --quiet "${git_url}" ":${branch}" 1>/dev/null 2>&1
-  git push --quiet "${git_url}" --set-upstream "${branch}" 1>/dev/null 2>&1
-}
-
-post_pull_request() {
-  local repo="$1"
-  local default_branch="$2"
-  local post_json
-  post_json="$(printf '{"title":"%s","base":"%s","head":"%s","body":"%s"}' "${pr_title}" "${default_branch}" "${branch}" "${pr_msg}")"
-  echo "Posting PR to ${default_branch} on ${repo}"
-  github_api "repos/${repo}/pulls" --data "${post_json}" --show-error |
-    jq -r '"PR URL " + .html_url'
-}
-
-process_repo() {
-  local org_repo
-  local default_branch
-  org_repo="$1"
-  mkdir -p "${tmp_dir}/${org_repo}"
-  echo_green "Processing '${org_repo}'"
-
-  default_branch="$(get_default_branch "${org_repo}")"
-  if [[ -z "${default_branch}" ]]; then
-    echo "Can't get the default branch."
-    return
-  fi
-  echo "Default branch: ${default_branch}"
-
-  # Clone target repo to temporary directory and checkout to new branch
-  git clone --quiet "https://github.com/${org_repo}.git" "${tmp_dir}/${org_repo}"
-  cd "${tmp_dir}/${org_repo}" || return 1
-  git checkout -b "${branch}" || return 1
-
-  git rm -r .
-
-  cp -ra ${source_dir}/. .
-  git add .
-
-  for excluded_dir in ${excluded_dirs}; do
-      git reset -- "${excluded_dir}/*"
-      git checkout -- "${excluded_dir}/*"
-  done
-
-  for excluded_file in ${excluded_files}; do
-      git reset -- "${excluded_file}"
-      git checkout -- "${excluded_file}"
-  done
-
-  if [[ -n "$(git status --porcelain)" ]]; then
-    git config user.email "${git_mail}"
-    git config user.name "${git_user}"
-    git add .
-    git commit -s -m "${commit_msg}"
-    if push_branch "${org_repo}"; then
-      if ! post_pull_request "${org_repo}" "${default_branch}"; then
-        return 1
-      fi
-    else
-      echo "Pushing ${branch} to ${org_repo} failed"
-      return 1
-    fi
-  fi
-}
-
-process_repo ${target_repo}