common.py error fix, i thing is correct but not sure

--- a/common.py 2013-11-11 14:39:40.594842600 +0100
+++ b/common.py 2013-11-11 14:50:23.902823592 +0100
@@ -302,10 +302,7 @@
   custom_bootimg_mk = os.getenv('MKBOOTIMG')
   if custom_bootimg_mk:
     bootimage_path = os.path.join(os.getenv('OUT'), "boot.img")
-    if os.path.exists(prebuilt_path):
-      print "Patch Exist"
-    else:
-      os.mkdir(prebuilt_dir)
+    os.mkdir(prebuilt_dir)
     shutil.copyfile(bootimage_path, prebuilt_path)
   if os.path.exists(prebuilt_path):
     print "using prebuilt %s..." % (prebuilt_name,)