[lit] Undo the patch to stop writing pyc files.

The problems on the bots appear to be resolved and this was
determined to not be the culprit.  Removing this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313807 91177308-0d34-0410-b5e6-96231b3b80d8

utils/lit/lit.py

@@ -1,8 +1,6 @@
 #!/usr/bin/env python
 import sys
 
-sys.dont_write_bytecode = True
-
 from lit.main import main
 
 if __name__=='__main__':

utils/llvm-lit/llvm-lit.in

@@ -3,8 +3,6 @@
 import os
 import sys
 
-sys.dont_write_bytecode = True
-
 config_map = {}
 
 def map_config(source_dir, site_config):