MAINTAINERS: update CAPABILITIES pattern

Commit 1ddd3b4e ("LSM: Remove unused capability.c") removed the
file, remove the file pattern.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -2427,7 +2427,6 @@ L:	linux-security-module@vger.kernel.org
 S:	Supported
 F:	include/linux/capability.h
 F:	include/uapi/linux/capability.h
-F:	security/capability.c
 F:	security/commoncap.c
 F:	kernel/capability.c