[infra] Drop yamllint installation (#2886)

Author: Kielek

.github/workflows/yamllint.yml

@@ -12,8 +12,5 @@ jobs:
     - name: check out code
       uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
-    - name: install yamllint
-      run: pip install -r ./build/yamllint-requirements.txt --require-hashes
-
     - name: run yamllint
       run: yamllint --no-warnings .