aclui: Use --prefer-native instead of DLL_WINE_PREATTACH.

dlls/aclui/Makefile.in

 MODULE    = aclui.dll
 IMPORTLIB = aclui
 
-EXTRADLLFLAGS = -mno-cygwin
+EXTRADLLFLAGS = -mno-cygwin -Wb,--prefer-native
 
 C_SRCS = aclui_main.c

dlls/aclui/aclui_main.c

@@ -31,21 +31,6 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(aclui);
 
-BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
-{
-    TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);
-
-    switch (fdwReason)
-    {
-    case DLL_WINE_PREATTACH:
-        return FALSE;    /* prefer native version */
-    case DLL_PROCESS_ATTACH:
-        DisableThreadLibraryCalls(hinstDLL);
-        break;
-    }
-    return TRUE;
-}
-
 HPROPSHEETPAGE WINAPI CreateSecurityPage(LPSECURITYINFO psi)
 {
     FIXME("(%p): stub\n", psi);