Remove file that don't exist in the MANIFEST.in file.

MANIFEST.in

@@ -2,8 +2,7 @@ global-include *.txt
 global-include *.cu
 global-include *.cuh
 global-include *.sh
-recursive-include docs *.png *.gp
-include distribute_setup.py
+recursive-include docs
 include bin/theano-cache
 include bin/theano-nose
 include bin/theano-test