Remove google-java-format from CI lint infrastructure

[kirklandsign]

Summary:
All Android source files in ExecuTorch have been converted from Java to Kotlin as part of the ongoing Java-to-Kotlin migration. The google-java-format linter and CI job are no longer needed since there are no Java files left to format.

This removes:

• The google-java-format binary installation from the Docker linter image (.ci/docker/common/install_linter.sh)
• The android-java-format CI job from the lint workflow (.github/workflows/lint.yml)

Differential Revision: D106575515

[pytorch-bot]

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❌ 3 New Failures, 7 Cancelled Jobs, 3 Unrelated Failures

As of commit 37469ab with merge base d366f43 ():

NEW FAILURES - The following jobs have failed:

• Build Presets / linux (llm, linux.arm64.2xlarge, executorch-ubuntu-22.04-gcc11-aarch64) / build (gh)
  RuntimeError: Command docker exec -t 83337b6fbef3215386b588e8459921e841c81dd3fdbb75e5ce844912fbf947b0time="2026-05-28T00:01:00Z" level=error msg="error waiting for container: context canceled" /exec failed with exit code 1
• Build Presets / windows (pybind) / build (gh)
• pull / android / build-android (gh)

CANCELLED JOBS - The following jobs were cancelled. Please retry:

• pull / test-models-linux (mobilebert, xnnpack-quantization-delegation, linux.2xlarge) / linux-job (gh)
• pull / test-multimodal-linux (gemma3-4b) / linux-job (gh)
  ##[error]The operation was canceled.
• pull / test-qnn-passes-linux / linux-job (gh)
  ##[error]The operation was canceled.
• pull / test-qnn-python-imports-linux / linux-job (gh)
  ##[error]The operation was canceled.
• pull / unittest / linux / linux-job (gh)
  ##[error]The operation was canceled.
• pull / unittest-editable / linux / linux-job (gh)
  ##[error]The operation was canceled.
• pull / unittest-nxp-neutron / linux-job (gh)
  ##[error]The operation was canceled.

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• pull / test-models-linux (add_mul, xnnpack-quantization-delegation, linux.2xlarge) / linux-job (gh) (matched linux rule in flaky-rules.json)
  The runner has received a shutdown signal. This can happen when the runner service is stopped, or a manually started runner is canceled.

BROKEN TRUNK - The following jobs failed but was present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / macos / macos-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  ##[error]The operation was canceled.

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[meta-codesync]

@kirklandsign has exported this pull request. If you are a Meta employee, you can view the originating Diff in D106575515.

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[Copilot]

Pull request overview

Removes the google-java-format installation from the linter Docker image and deletes the dedicated Android Java formatting job from the GitHub Actions lint workflow, based on the assumption that the Android codebase has completed migration from Java to Kotlin.

Changes:

• Delete the android-java-format job from .github/workflows/lint.yml.
• Remove google-java-format binary installation from .ci/docker/common/install_linter.sh.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/lint.yml	Removes the CI job that checked formatting of Android/benchmark .java sources.
.ci/docker/common/install_linter.sh	Stops installing google-java-format into the linter Docker image.

Comments suppressed due to low confidence (1)

.github/workflows/lint.yml:128

• This PR removes the android-java-format lint job under the assumption that there are no Java sources left, but there are still .java files in the repo (e.g. extension/android/executorch_android/src/main/java/org/pytorch/executorch/Module.java, Tensor.java, and extension/benchmark/android/benchmark/app/src/androidTest/java/org/pytorch/minibench/ExampleInstrumentedTest.java). Removing the job will drop formatting enforcement for these remaining Java files. Either (a) convert/remove the remaining .java files as part of the migration, or (b) keep (or replace) a Java formatting check in CI until they are gone.

  link-check:
    uses: ./.github/workflows/_link_check.yml
    with:
      ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}

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