mscms: Exclude unused headers

[Andrew Talbot]

Changelog:
    mscms: Exclude unused headers.

diff -urN a/dlls/mscms/icc.c b/dlls/mscms/icc.c
--- a/dlls/mscms/icc.c	2006-09-11 12:05:53.000000000 +0100
+++ b/dlls/mscms/icc.c	2007-05-09 18:35:57.000000000 +0100
@@ -24,10 +24,8 @@
 
 #include "windef.h"
 #include "winbase.h"
-#include "winnls.h"
 #include "wingdi.h"
 #include "winuser.h"
-#include "winreg.h"
 #include "winternl.h"
 #include "icm.h"