simplemerge: remove now-unused arguments
The `ui` argument is no longer needed now that we don't handle
`--print` in the library code.
Differential Revision: https://phab.mercurial-scm.org/D12151
from __future__ import absolute_import, print_function
import sys
for line in sys.stdin:
if line.lower() in ("message-id: \n", "in-reply-to: \n"):
line = line[:-2]
print(line, end="")