Update action.yml

Author: jonashaag

.github/actions/setup-ccache/action.yml

@@ -5,7 +5,7 @@ runs:
     - name: Make cache key
       id: cache-key
       run: |
-        key="${{ runner.os }}--${{ runner.arch }}--${{ github.workflow }}--${{ inputs.extra-cache-key }}"
+        key="${{ runner.os }}--${{ runner.arch }}--${{ github.workflow }}"
         # Date: Daily invalidation of all ccaches as an extra safety measure.
         key="$key--$(/bin/date -u '+%Y%m%d')"
         # Python version: Separate caches for each Python version. This reduces the number of cache misses.