Revert "Don't use the (win32) jawt_md.h as we don't have that when cross-compiling"

This reverts commit db578233, as it causes
loplugin:externandnotdefined under clang-cl, and cross-compiling Windows on
Linux seems a rather dead project for now.

Change-Id: Ia7fd742385fa0d609007f70e5116a99729224f77
Reviewed-on: https://gerrit.libreoffice.org/29835Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

bean/native/win32/com_sun_star_comp_beans_LocalOfficeWindow.c

@@ -25,32 +25,10 @@
 #pragma warning(pop)
 #endif
 
-#define JAWT_GetAWT hidden_JAWT_GetAWT
-#include "jawt.h"
-#undef JAWT_GetAWT
-
 #if defined _MSC_VER
 #pragma warning(push, 1)
 #endif
-/* When cross-compiling to Windows we don't have any Windows JDK
- * available. Copying this short snippet from win32/jawt_md.h can
- * surely not be against its license. The intent is to enable
- * interoperation with real Oracle Java after all. We leave out the
- * informative comments that might have "artistic merit" and be more
- * copyrightable. Use this also for native Windows compilation for
- * simplicity.
- */
-typedef struct jawt_Win32DrawingSurfaceInfo {
-    union {
-        HWND hwnd;
-        HBITMAP hbitmap;
-        void* pbits;
-    };
-    HDC hdc;
-    HPALETTE hpalette;
-} JAWT_Win32DrawingSurfaceInfo;
-
-JNIIMPORT unsigned char JNICALL JAWT_GetAWT(JNIEnv *, JAWT *);
+#include "jawt_md.h"
 #if defined _MSC_VER
 #pragma warning(pop)
 #endif