Disable check bans sources in oss

Summary:
Added in D36400473.

[Broken now](https://github.com/facebook/starlark-rust/actions/runs/11090112347/job/30812033695), it is not clear how to fix it, and it is barely helpful.

Reviewed By: ndmitchell

Differential Revision: D63616062

fbshipit-source-id: bb3a8d456640090784697b3193c844bf73f5b103

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
     - run: cargo build
     - run: cargo test
     - run: cargo bench
-    - uses: EmbarkStudios/cargo-deny-action@v1
-      if: matrix.os == 'ubuntu-latest' # Only works on Linux
-      with:
-        command: check bans sources
+    # - uses: EmbarkStudios/cargo-deny-action@v1
+    #   if: matrix.os == 'ubuntu-latest' # Only works on Linux
+    #   with:
+    #     command: check bans sources