mapi/glapi: remove unused next_available_offset.sh

Afaict there was no [documented] users since it was introduced.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/mapi/glapi/gen/next_available_offset.sh

@@ -1,39 +0,0 @@
-#!/usr/bin/env bash
-#
-# (C) Copyright IBM Corporation 2004
-# All Rights Reserved.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a
-# copy of this software and associated documentation files (the "Software"),
-# to deal in the Software without restriction, including without limitation
-# on the rights to use, copy, modify, merge, publish, distribute, sub
-# license, and/or sell copies of the Software, and to permit persons to whom
-# the Software is furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice (including the next
-# paragraph) shall be included in all copies or substantial portions of the
-# Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
-# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-# IN THE SOFTWARE.
-#
-# Authors:
-#    Ian Romanick <idr@us.ibm.com>
-
-# Trivial shell script to search the API definition file and print out the
-# next numerically available API entry-point offset.  This could probably
-# be made smarter, but it would be better to use the existin Python
-# framework to do that.  This is just a quick-and-dirty hack.
-
-num=$(grep 'offset="' gl_API.xml |\
-    sed 's/.\+ offset="//g;s/".*$//g' |\
-    grep -v '?' |\
-    sort -rn |\
-    head -1)
-    
-echo $((num + 1))