Remove Ballista CI check

.github/pull_request_template.md

@@ -24,24 +24,4 @@ If there are user-facing changes then we may require documentation to be updated
 
 <!--
 If there are any breaking changes to public APIs, please add the `api change` label.
--->
-
-# Does this PR break compatibility with Ballista?
-
-<!--
-The CI checks will attempt to build [arrow-ballista](https://github.com/apache/arrow-ballista) against this PR. If 
-this check fails then it indicates that this PR makes a breaking change to the DataFusion API.
-
-If possible, try to make the change in a way that is not a breaking API change. For example, if code has moved 
- around, try adding `pub use` from the original location to preserve the current API.
-
-If it is not possible to avoid a breaking change (such as when adding enum variants) then follow this process:
-
-- Make a corresponding PR against `arrow-ballista` with the changes required there
-- Update `dev/build-arrow-ballista.sh` to clone the appropriate `arrow-ballista` repo & branch
-- Merge this PR when CI passes
-- Merge the Ballista PR
-- Create a new PR here to reset `dev/build-arrow-ballista.sh` to point to `arrow-ballista` master again
-
-_If you would like to help improve this process, please see https://github.com/apache/arrow-datafusion/issues/2583_
 -->

.github/workflows/rust.yml

@@ -125,51 +125,6 @@ jobs:
           CARGO_HOME: "/github/home/.cargo"
           CARGO_TARGET_DIR: "/github/home/target"
 
-  # run ballista tests
-  ballista-test:
-    name: Test Ballista on AMD64 Rust ${{ matrix.rust }}
-    needs: [linux-build-lib]
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        arch: [amd64]
-        rust: [stable]
-    container:
-      image: ${{ matrix.arch }}/rust
-      env:
-        # Disable full debug symbol generation to speed up CI build and keep memory down
-        # "1" means line tables only, which is useful for panic tracebacks.
-        RUSTFLAGS: "-C debuginfo=1"
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: true
-      - uses: actions/setup-python@v3
-        with:
-          python-version: '3.x'
-      - name: Cache Cargo
-        uses: actions/cache@v3
-        with:
-          path: /github/home/.cargo
-          # this key equals the ones on `linux-build-lib` for re-use
-          key: cargo-cache-
-      - name: Cache Rust dependencies
-        uses: actions/cache@v3
-        with:
-          path: /github/home/target
-          # this key equals the ones on `linux-build-lib` for re-use
-          key: ${{ runner.os }}-${{ matrix.arch }}-target-cache-${{ matrix.rust }}
-      - name: Setup Rust toolchain
-        uses: ./.github/actions/setup-builder
-        with:
-          rust-version: ${{ matrix.rust }}
-      - name: Run tests
-        run: |
-          ./dev/build-arrow-ballista.sh
-        env:
-          CARGO_HOME: "/github/home/.cargo"
-          CARGO_TARGET_DIR: "/github/home/target"
-
   integration-test:
     name: "Integration Test"
     needs: [linux-build-lib]