gnucash maint: Remove obsolete AS_SCRUB_INCLUDES macro.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/b905c4a2 (commit)
	from  https://github.com/Gnucash/gnucash/commit/2d5056db (commit)



commit b905c4a26d57a7b2878db92050e97ec9f3d5a9b9
Author: John Ralls <jralls at ceridwen.us>
Date:   Sun Sep 25 23:07:14 2016 +0200

    Remove obsolete AS_SCRUB_INCLUDES macro.
    
    This was an ugly work-around for a bogus warning from gcc-3, a
    long-superceded compiler. The way the macro was written caused
    portablility issues (see PR 102) and other projects (gstreamer
    in particular) removed it several years ago.
    
    Thanks to Julian Ospald for bringing it to our attention.



Summary of changes:
 configure.ac               |  7 -------
 macros/as-scrub-include.m4 | 32 --------------------------------
 2 files changed, 39 deletions(-)
 delete mode 100644 macros/as-scrub-include.m4