package/emscripten: don't include vlc_common.h to generate modules list

This way we don't need the config.h include either.
This is possible since b437cad568

extras/package/wasm-emscripten/build.sh

@@ -202,8 +202,7 @@ do
 done;
 
 printf "// This file is autogenerated
-#include \"config.h\"
-#include <vlc_common.h>
+#include <stddef.h>
 #include <vlc_plugin.h>
 %b\n
 const vlc_plugin_cb vlc_static_modules[] = {