kbuild: trivial - remove trailing empty lines

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

Change-Id: I019ba09f7371cff2699a6c854c478fec53e51126
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/9311
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

util/kconfig/util.c

@@ -159,5 +159,3 @@ void *xcalloc(size_t nmemb, size_t size)
 	fprintf(stderr, "Out of memory.\n");
 	exit(1);
 }
-
-