[folks] Remove libtool m4 macros from the git tree

[Philip Withnall <pwithnall src gnome org>]

commit 6bcd5a03185e186b92c20ae732337df64ac0f5ef
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Sun Dec 12 11:04:58 2010 +0000

    Remove libtool m4 macros from the git tree
    
    They're copied into the build tree from the system libtool installation by
    libtoolize, and don't belong in git.

 m4/ltoptions.m4   |  368 -----------------------------------------------------
 m4/ltsugar.m4     |  123 ------------------
 m4/lt~obsolete.m4 |   92 -------------
 3 files changed, 0 insertions(+), 583 deletions(-)