remove obsolete firebase script (#71609)

dev/bots/firebase_testlab.sh

-#!/usr/bin/env bash
-# Copyright 2014 The Flutter Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-set -e
-
-# The tests to run on Firebase Test Lab.
-# Currently, the test consists on building an Android App Bundle and ensuring
-# that the app doesn't crash upon startup.
-#
-# When adding a test, ensure that there's at least a `print()` statement under lib/*.dart.
-#
-# The first and only parameter should be the path to an integration test.
-
-# The devices where the tests are run.
-#
-# To get the full list of devices available, run:
-#     gcloud firebase test android models list
-devices=(
-  # Pixel 3
-  "model=blueline,version=28"
-
-  # Pixel 4
-  "model=flame,version=29"
-
-  # Moto Z XT1650
-  "model=griffin,version=24"
-)
-
-GIT_REVISION=$(git rev-parse HEAD)
-
-DEVICE_FLAG=""
-for device in ${devices[*]}; do
-  DEVICE_FLAG+="--device $device "
-done
-
-# If running tests locally, the key env var needs to be set.
-if [[ -z $GCLOUD_FIREBASE_TESTLAB_KEY ]]; then
-  echo "Not running firebase test lab tests because GCLOUD_FIREBASE_TESTLAB_KEY isn't set."
-  exit 0
-fi
-
-# New contributors will not have permissions to run this test - they won't be
-# able to access the service account information. We should just mark the test
-# as passed - it will run fine on post submit, where it will still catch
-# failures.
-# We can also still make sure that building a release app bundle still works.
-if [[ $GCLOUD_FIREBASE_TESTLAB_KEY == ENCRYPTED* ]]; then
-  echo "This user does not have permission to run this test."
-  exit 0
-fi
-
-echo $GCLOUD_FIREBASE_TESTLAB_KEY > ${HOME}/gcloud-service-key.json
-gcloud auth activate-service-account --key-file=${HOME}/gcloud-service-key.json
-gcloud --quiet config set project flutter-infra
-
-function test_app_bundle() {
-  pushd "$@"
-  ../../../bin/flutter build appbundle --target-platform android-arm,android-arm64
-
-  aab="build/app/outputs/bundle/release/app-release.aab"
-
-  # If the app bundle doesn't exist, then exit with code 1.
-  if [ ! -f "$aab" ]; then
-    exit 1
-  fi
-
-  # Run the test.
-  gcloud firebase test android run \
-    --type robo \
-    --app "$aab" \
-    --timeout 2m \
-    --results-bucket=gs://flutter_firebase_testlab \
-    --results-dir="$@"/"$GIT_REVISION"/"$CIRRUS_BUILD_ID" \
-    $DEVICE_FLAG
-
-  rm -f /tmp/logcat
-  gsutil cat gs://flutter_firebase_testlab/"$@"/"$GIT_REVISION"/"$CIRRUS_BUILD_ID"/*/logcat > /tmp/logcat
-  # Check logcat for "E/flutter" - if it's there, something's wrong.
-  ! grep "E/flutter" /tmp/logcat || false
-  # Check logcat for "I/flutter" - This is in the log if there's a print statement under lib/*.dart.
-  grep "I/flutter" /tmp/logcat
-  popd
-}
-
-test_app_bundle "$1"