[cleanup] Remove unused script (#54155)

dev/bots/debug_smoke_ftl.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
-
-GIT_REVISION=$(git rev-parse HEAD)
-
-# 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
-
-pushd dev/integration_tests/release_smoke_test
-
-../../../bin/flutter build appbundle \
-  --debug \
-  --target "test_adapter/hello_world_test.dart"
-
-pushd android
-
-./gradlew assembleAndroidTest
-
-popd
-
-# Firebase Test Lab tests are currently known to be failing with
-# "Firebase Test Lab infrastructure failure: Error during preprocessing"
-# Remove "|| exit 0" once the failures are resolved
-# https://github.com/flutter/flutter/issues/36501
-
-# Runs on an emulator because it's cheaper.
-gcloud firebase test android run \
-  --type=instrumentation \
-  --app="build/app/outputs/bundle/debug/app.aab" \
-  --test="build/app/outputs/apk/androidTest/debug/app-debug-androidTest.apk" \
-  --device="model=Pixel2,version=28,locale=en,orientation=portrait" \
-  --timeout 2m \
-  --results-bucket=gs://flutter_firebase_testlab \
-  --results-dir=release_smoke_test/$GIT_REVISION/$CIRRUS_BUILD_ID || exit 0
-
-popd
-
-# Check logcat for "E/flutter" - if it's there, something's wrong.
-gsutil cp gs://flutter_firebase_testlab/release_smoke_test/$GIT_REVISION/$CIRRUS_BUILD_ID/Pixel2-28-en-portrait/logcat /tmp/logcat
-! grep "E/flutter" /tmp/logcat || false
-grep "I/flutter" /tmp/logcat