[tech debt] delete unused framework-engine test scripts (#160698)

Fixes https://github.com/flutter/flutter/issues/160405

engine/src/flutter/tools/clone_flutter.sh

@@ -1,79 +0,0 @@
-#!/bin/bash
-set -e
-set -x
-
-if [[ "$CIRRUS_CI" = false || -z $CIRRUS_CI ]]
-then
-  echo "Cloning Flutter repo to local machine."
-fi
-
-if [[ -z $ENGINE_PATH ]]
-then
-  echo "Please set ENGINE_PATH environment variable."
-  exit 1
-fi
-
-# Go to the engine git repo to get the date of the latest commit.
-cd $ENGINE_PATH/src/flutter
-
-# Special handling of release branches.
-ENGINE_BRANCH_NAME=$CIRRUS_BASE_BRANCH
-versionregex="^v[[:digit:]]+\."
-releasecandidateregex="^flutter-[[:digit:]]+\.[[:digit:]]+-candidate\.[[:digit:]]+$"
-ON_RELEASE_BRANCH=false
-echo "Engine on branch $ENGINE_BRANCH_NAME"
-if [[ $ENGINE_BRANCH_NAME =~ $versionregex || $ENGINE_BRANCH_NAME =~ $releasecandidateregex ]]
-then
-  echo "release branch $ENGINE_BRANCH_NAME"
-  ON_RELEASE_BRANCH=true
-fi
-
-# Get latest commit's time for the engine repo.
-# Use date based on local time otherwise timezones might get mixed.
-LATEST_COMMIT_TIME_ENGINE=`git log -1 --date=local --format="%cd"`
-echo "Latest commit time on engine found as $LATEST_COMMIT_TIME_ENGINE"
-
-# Check if there is an argument added for repo location.
-# If not use the location that should be set by Cirrus/LUCI.
-FLUTTER_CLONE_REPO_PATH=$1
-
-if [[ -z $FLUTTER_CLONE_REPO_PATH ]]
-then
-  if [[ -z $FRAMEWORK_PATH ]]
-  then
-    echo "Framework path should be set to run the script."
-    exit 1
-  fi
-  # Do rest of the task in the root directory
-  cd ~
-  mkdir -p $FRAMEWORK_PATH
-  cd $FRAMEWORK_PATH
-else
-  cd $FLUTTER_CLONE_REPO_PATH
-fi
-
-# Clone the Flutter Framework.
-git clone https://github.com/flutter/flutter.git
-cd flutter
-
-FRAMEWORK_BRANCH_NAME=`git branch | grep '*' | cut -d ' ' -f2`
-if [[ "$ON_RELEASE_BRANCH" = true && ENGINE_BRANCH_NAME != FRAMEWORK_BRANCH_NAME ]]
-then
-  echo "For a release framework and engine should be on the same version."
-  echo "Switching branches on Framework to from $FRAMEWORK_BRANCH_NAME to $ENGINE_BRANCH_NAME"
-  # Switch to the same version branch with the engine.
-  # If same version branch does not exits, fail.
-  SWITCH_RESULT=`git checkout $ENGINE_BRANCH_NAME` || true
-  if [[ -z "$SWITCH_RESULT" ]]
-  then
-    echo "$ENGINE_BRANCH_NAME Branch not found on framework. Quit."
-    exit 1
-  fi
-fi
-
-# Get the time of the youngest commit older than engine commit.
-# Git log uses commit date not the author date.
-# Before makes the comparison considering the timezone as well.
-COMMIT_NO=`git log --before="$LATEST_COMMIT_TIME_ENGINE" -n 1 | grep commit | cut -d ' ' -f2`
-echo "Using the flutter/flutter commit $COMMIT_NO";
-git reset --hard $COMMIT_NO

engine/src/flutter/tools/configure_framework_commit.sh

@@ -1,56 +0,0 @@
-#!/bin/bash
-set -e
-set -x
-
-if [[ -z $ENGINE_PATH ]]
-then
-  echo "Please set ENGINE_PATH environment variable."
-  exit 1
-fi
-
-
-# Go to the engine git repo to get the date of the latest commit.
-cd $ENGINE_PATH/src/flutter
-
-ENGINE_COMMIT=`git rev-parse HEAD`
-echo "Using engine commit: $ENGINE_COMMIT"
-
-if [[ -z $FLUTTER_CLONE_REPO_PATH ]]
-then
-  echo "Please set FLUTTER_CLONE_REPO_PATH environment variable."
-  exit 1
-else
-  cd $FLUTTER_CLONE_REPO_PATH
-fi
-
-if [[ $GIT_BRANCH =~ ^flutter-.*-candidate.*$ ]]
-then
-  # Coming from presubmit and assuming the correct branch has been already checked out.
-  COMMIT_NO=`git rev-parse HEAD`
-else
-  # Try to get release branch from the checkout.
-  RELEASE_BRANCH=`git branch -a --contains $ENGINE_COMMIT | grep 'flutter-.*-candidate.*' || true`
-  if [[ -z $RELEASE_BRANCH ]]
-  then
-    # If this is not a release branch commit get latest commit's time for the engine repo.
-    # Use date based on local time otherwise timezones might get mixed.
-    LATEST_COMMIT_TIME_ENGINE=`git log -1 --date=local --format="%cd"`
-    echo "Latest commit time on engine found as $LATEST_COMMIT_TIME_ENGINE"
-
-    # Get the time of the youngest commit older than engine commit.
-    # Git log uses commit date not the author date.
-    # Before makes the comparison considering the timezone as well.
-    COMMIT_NO=`git log --before="$LATEST_COMMIT_TIME_ENGINE" -n 1 | grep commit | cut -d ' ' -f2`
-  else
-    COMMIT_NO=`git rev-parse $RELEASE_BRANCH`
-    git checkout $RELEASE_BRANCH
-  fi
-fi
-
-echo "Using the flutter/flutter commit $COMMIT_NO";
-git reset --hard $COMMIT_NO
-# Write the commit number to a file. This file will be read by the LUCI recipe.
-echo "$COMMIT_NO" >> flutter_ref.txt
-
-# Print out the flutter version for troubleshooting
-$FLUTTER_CLONE_REPO_PATH/bin/flutter --version -v