wic: code cleanup: unused imports

Fixed pylint warning 'Unused import'

(From OE-Core rev: dfde8bdae3ae151ffed5777b920d24c774e5da2c)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/imager/baseimager.py

@@ -17,7 +17,7 @@
 # Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 from __future__ import with_statement
-import os, sys
+import os
 import tempfile
 import shutil
 

scripts/lib/wic/imager/direct.py

@@ -25,7 +25,6 @@
 #
 
 import os
-import stat
 import shutil
 
 from wic import kickstart, msger