Remove unused script from run-make tests

tests/run-make/git_clone_sha1.sh

@@ -1,23 +0,0 @@
-#!/bin/bash -x
-
-# Usage: $0 project_name url sha1
-# Get the crate with the specified sha1.
-#
-# all arguments are required.
-#
-# See below link for git usage:
-# https://stackoverflow.com/questions/3489173#14091182
-
-# Mandatory arguments:
-PROJECT_NAME=$1
-URL=$2
-SHA1=$3
-
-function err_exit() {
-    echo "ERROR:" $*
-    exit 1
-}
-
-git clone $URL $PROJECT_NAME || err_exit
-cd $PROJECT_NAME || err_exit
-git reset --hard $SHA1 || err_exit