selinux, kbuild: remove unnecessary $(hostprogs-y) from clean-files

Files added to hostprogs-y are cleaned. (See scripts/Makefile.clean)
Adding them to clean-files is redundant.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
diff --git a/scripts/selinux/genheaders/Makefile b/scripts/selinux/genheaders/Makefile
index 417b165..1d1ac51 100644
--- a/scripts/selinux/genheaders/Makefile
+++ b/scripts/selinux/genheaders/Makefile
@@ -2,4 +2,3 @@
 HOST_EXTRACFLAGS += -Isecurity/selinux/include
 
 always		:= $(hostprogs-y)
-clean-files	:= $(hostprogs-y)
diff --git a/scripts/selinux/mdp/Makefile b/scripts/selinux/mdp/Makefile
index eb365b3..dba7eff 100644
--- a/scripts/selinux/mdp/Makefile
+++ b/scripts/selinux/mdp/Makefile
@@ -2,4 +2,4 @@
 HOST_EXTRACFLAGS += -Isecurity/selinux/include
 
 always		:= $(hostprogs-y)
-clean-files	:= $(hostprogs-y) policy.* file_contexts
+clean-files	:= policy.* file_contexts