Log Message:
-----------
Remove old pecoff files.
Removed Files:
-------------
src/sys/compat/pecoff:
imgact_pecoff.c
(http://cvsweb.midnightbsd.org/src/sys/compat/pecoff/imgact_pecoff.c)
imgact_pecoff.h
(http://cvsweb.midnightbsd.org/src/sys/compat/pecoff/imgact_pecoff.h)