Drop an action that we no longer need

What was running out of disk space were BuildBuddy
worker hosts, not GitHub Actions worker ones.

Plus the Action is currently broken because it tries
to delete a package that was renamed.

(cherry picked from commit 27d88da)

Author: michaelklishin

.github/workflows/oci.yaml

@@ -38,21 +38,6 @@ jobs:
           - image_tag_suffix: otp-max-bazel
             otp_version_id: 26_1
     steps:
-      - name: Free Disk Space (Ubuntu)
-        uses: jlumbroso/free-disk-space@main
-        with:
-          # this might remove tools that are actually needed,
-          # if set to "true" but frees about 6 GB
-          tool-cache: false
-          # all of these default to true, but feel free to set to
-          # "false" if necessary for your workflow
-          android: true
-          dotnet: true
-          haskell: true
-          large-packages: true
-          docker-images: false
-          swap-storage: true
-
       - name: Checkout
         uses: actions/checkout@v3