CI: Remove "Free disk space on runner" job

Author: Repiteo

.github/workflows/linux_builds.yml

@@ -115,12 +115,6 @@ jobs:
         run: |
           sudo apt-get install libwayland-bin
 
-      - name: Free disk space on runner
-        run: |
-          echo "Disk usage before:" && df -h
-          sudo rm -rf /usr/local/lib/android
-          echo "Disk usage after:" && df -h
-
       - name: Restore Godot build cache
         uses: ./.github/actions/godot-cache-restore
         with: