qga: Remove unneeded include file

This file does not depend on windows.h.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

qga/main.c

@@ -35,7 +35,6 @@
 #ifdef _WIN32
 #include "qga/service-win32.h"
 #include "qga/vss-win32.h"
-#include <windows.h>
 #endif
 #ifdef __linux__
 #include <linux/fs.h>