chore(ci): remove container-storage-action (#2920)

There is no /mnt anymore, this will no longer run and is useless.

Follow-up of 6ce2bb1d9a.

.github/workflows/reusable-build.yml

@@ -68,19 +68,6 @@ jobs:
         with:
           persist-credentials: false
 
-      # FIXME: We need both actions as we run out of space on /var/tmp, however this
-      # will still fail sometimes as even the smallest 72G runners have a
-      # chance of not having /mnt and only 20GB free. Please investigate this
-      # in the future
-
-      - name: Mount BTRFS for podman storage
-        id: container-storage-action
-        uses: ublue-os/container-storage-action@25e05be4948f77746938687877829d15c5038036
-        continue-on-error: true
-        with:
-          mount-opts: compress-force=zstd:2
-          loopback-free: '1'
-
       - name: Free Up Space
         id: free-disk-space
         uses: hastd/free-disk-space@68572aeaadb7f76bd408246328e95926323402b5 # v0.1.2