[mapnik] Remove unused patches

[Tom Hughes]

commit 647cc9fad8f79549831c69b2dd271a0fcf55085f
Author: Tom Hughes <tom at compton.nu>
Date:   Tue Jan 27 21:06:36 2015 +0000

    Remove unused patches

 mapnik-2.1.0-boost.patch      |   36 ------------------------------------
 mapnik-missingaggdepend.patch |   12 ------------
 2 files changed, 0 insertions(+), 48 deletions(-)