Linux: remove useless garde-fou

Author: BoboTiG

mss/__init__.py

@@ -5,8 +5,6 @@
 
     This module is maintained by Mickaël Schoentgen <contact@tiger-222.fr>.
 
-    Note: please keep this module compatible to Python 2.6.
-
     You can always get the latest version of this module at:
         https://github.com/BoboTiG/python-mss
     If that URL should fail, try contacting the author.

mss/linux.py

@@ -83,12 +83,6 @@ class MSS(MSSBase):
         It uses intensively the Xlib and Xrandr extension.
     '''
 
-    display = None
-    xlib = None
-    xrandr = None
-    display = None
-    root = None
-
     def __del__(self):
         ''' Disconnect from X server. '''