Cleanup: Remove the compile-innodb script

The InnoDB storage engine is being built by default.
There is no need to have an unportable script that encourages
in-source builds and a particular build driver.

storage/innobase/compile-innodb

-#!/bin/sh
-#
-# Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
-#
-# This program is free software; you can redistribute it and/or modify it under
-# the terms of the GNU General Public License as published by the Free Software
-# Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along with
-# this program; if not, write to the Free Software Foundation, Inc., 
-# 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
-#
-
-# we assume this script is in storage/innobase/
-
-MYSQL_ROOT="$(dirname ${0})/../.."
-
-cd ${MYSQL_ROOT}
-
-cmake -DWITH_INNOBASE_STORAGE_ENGINE:BOOL=ON
-make -j$(nproc)