kernel32: Exclude unused headers.

dlls/kernel32/actctx.c

@@ -25,7 +25,6 @@
 #include "windef.h"
 #include "winbase.h"
 #include "winerror.h"
-#include "winnls.h"
 #include "wine/debug.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(actctx);

dlls/kernel32/atom.c

@@ -30,11 +30,9 @@
 #include "windef.h"
 #include "winbase.h"
 #include "winerror.h"
-#include "winreg.h"
 #include "winternl.h"
 
 #include "wine/exception.h"
-#include "excpt.h"
 #include "wine/unicode.h"
 #include "kernel_private.h"
 

dlls/kernel32/atom16.c

@@ -41,7 +41,6 @@
 
 #include "wine/unicode.h"
 #include "wine/winbase16.h"
-#include "kernel_private.h"
 #include "kernel16_private.h"
 
 #include "wine/debug.h"

dlls/kernel32/computername.c

@@ -43,7 +43,6 @@
 #include "winternl.h"
 #include "wine/unicode.h"
 #include "wine/exception.h"
-#include "excpt.h"
 #include "wine/debug.h"
 
 #include "kernel_private.h"

dlls/kernel32/cpu.c

@@ -51,7 +51,6 @@
 #include "winbase.h"
 #include "winnt.h"
 #include "winternl.h"
-#include "winerror.h"
 #include "wine/unicode.h"
 #include "wine/debug.h"
 

dlls/kernel32/error16.c

@@ -24,7 +24,6 @@
 #include <string.h>
 
 #include "windef.h"
-#include "winbase.h"
 #include "wine/winbase16.h"
 #include "wine/debug.h"