Get rid of Python 2 specific compatibility leftovers

Change-Id: I0068caa775d89349db2ad378fad22e89832b8d20

pySim/exceptions.py

@@ -21,14 +21,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-from __future__ import absolute_import
-
-try:
-	# This is for compatibility with python 2 and 3
-	from exceptions import Exception
-except:
-	pass
-
 class NoCardError(Exception):
 	pass