Documentation: kernel-parameters.txt remove capability.disable

Remove the documentation for capability.disable.  The code supporting
this parameter was removed with commit 5915eb5386 ("security: remove
dummy module")

Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: Rob Landley <rob@landley.net>
Cc: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/kernel-parameters.txt

@@ -446,12 +446,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			possible to determine what the correct size should be.
 			This option provides an override for these situations.
 
-	capability.disable=
-			[SECURITY] Disable capabilities.  This would normally
-			be used only if an alternative security model is to be
-			configured.  Potentially dangerous and should only be
-			used if you are entirely sure of the consequences.
-
 	ccw_timeout_log [S390]
 			See Documentation/s390/CommonIO for details.