Delete the geany_run_script.sh immediately after execution to prevent leaking old copies when the script was quit unexpectedly (closes #2710482, patch by Martin Olsson, thanks).

git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@3651 ea778897-0a13-0410-b9d1-a72fbfd435f5