Remove git-sync.sh (updates now done by homepage/Makefile itself)

git-sync.sh

-#!/bin/bash
-# Sync gradint build environment to Git
-git pull --no-edit
-wget -N http://ssb22.user.srcf.net/gradint/gradint-build.7z || exit 1
-rm -rf gradint # (any leftover ../gradint/gradint directory)
-7z x gradint-build.7z || exit 1
-diff -r gradint-build gradint|grep "^Only in gradint-build"|grep -v \\.git|sed -e 's,Only in ,git rm ",' -e 's,: ,/,' -e 's/$/"/'|bash
-cp -pur gradint/* gradint-build/
-find gradint|grep -v \\.git|sed -e 's/gradint/gradint-build/' -e 's/^/git add "/' -e 's/$/"/'|bash
-rm -rf gradint gradint-build.7z # if need to save space
-if test "a$Msg" == a; then export Msg="Gradint update"; fi
-git commit -am "$Msg" && git push