abandon python-mode, using intellij pycharm instead

Author: Huitse Tai

.gitmodules

@@ -22,6 +22,3 @@
 [submodule "bundle/vim-apl"]
 	path = bundle/vim-apl
 	url = git://github.com/ngn/vim-apl.git
-[submodule "bundle/python-mode"]
-	path = bundle/python-mode
-	url = git://github.com/klen/python-mode.git