Remove unused global cmd_split variable.

(*very* technically breaks backcompat, but it's not as if these were
likely to be used at all or as if there was a good way to emit a
warning.)

Author: anntzer

lib/matplotlib/backends/backend_ps.py

@@ -39,8 +39,6 @@
 import binascii
 import re
 
-if sys.platform.startswith('win'): cmd_split = '&'
-else: cmd_split = ';'
 
 backend_version = 'Level II'
 

lib/matplotlib/texmanager.py

@@ -57,12 +57,8 @@
 import matplotlib.dviread as dviread
 import re
 
-DEBUG = False
 
-if sys.platform.startswith('win'):
-    cmd_split = '&'
-else:
-    cmd_split = ';'
+DEBUG = False
 
 
 @mpl.cbook.deprecated("2.1")