wintab32: Exclude unused headers

[Andrew Talbot]

Changelog:
    wintab32: Exclude unused headers.

diff -urN a/dlls/wintab32/wintab16.c b/dlls/wintab32/wintab16.c
--- a/dlls/wintab32/wintab16.c	2006-10-09 12:09:40.000000000 +0100
+++ b/dlls/wintab32/wintab16.c	2007-05-25 17:24:32.000000000 +0100
@@ -23,7 +23,6 @@
 #include <stdarg.h>
 
 #include "windef.h"
-#include "winbase.h"
 
 #include "wintab.h"
 
diff -urN a/dlls/wintab32/wintab32.c b/dlls/wintab32/wintab32.c
--- a/dlls/wintab32/wintab32.c	2007-03-12 13:30:43.000000000 +0000
+++ b/dlls/wintab32/wintab32.c	2007-05-25 17:24:42.000000000 +0100
@@ -24,7 +24,6 @@
 #include "winbase.h"
 #include "wingdi.h"
 #include "winuser.h"
-#include "winerror.h"
 #include "wintab.h"
 #include "wintab_internal.h"
 #include "wine/debug.h"