srcfile.c: remove unnecessary #include's
srcfile.c: remove unnecessary #include's

Remove #include's inherited from nasmlib.c which aren't needed in this
file.

Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@linux.intel.com>

techkey/nasm,techkey/nasm,techkey/nasm,techkey/nasm,techkey/nasm