Remove temp dependency installing

Author: zeyi2

.github/workflows/pr-code-lint.yml

@@ -20,7 +20,7 @@ jobs:
       run:
         shell: bash
     container:
-      image: 'ghcr.io/llvm/ci-ubuntu-24.04-lint'
+      image: 'ghcr.io/llvm/ci-ubuntu-24.04-lint-doc8'
     timeout-minutes: 60
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
@@ -76,11 +76,6 @@ jobs:
                 clang-tablegen-targets \
                 genconfusable               # for "ConfusableIdentifierCheck.h"
 
-      - name: Install linter dependencies
-        run: |
-          pip install doc8 --break-system-packages
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
-
       - name: Run linters
         env:
           GITHUB_PR_NUMBER: ${{ github.event.pull_request.number }}