vlc.misc is only for interfaces (fix #3396)

For instance, vlc.misc.should_die assumes that the object is an
interface.

modules/lua/extension.c

@@ -828,7 +828,6 @@ static lua_State* GetLuaState( extensions_manager_t *p_mgr,
             luaopen_input( L );
             luaopen_md5( L );
             luaopen_msg( L );
-            luaopen_misc( L );
             luaopen_net( L );
             luaopen_object( L );
             luaopen_osd( L );

modules/lua/meta.c

@@ -71,7 +71,6 @@ static lua_State * init( vlc_object_t *p_this, input_item_t * p_item, const char
     luaopen_strings( L );
     luaopen_variables( L );
     luaopen_object( L );
-    luaopen_misc( L );
     luaopen_xml( L );
     luaopen_md5( L );
     luaopen_input_item( L, p_item );

modules/lua/services_discovery.c

@@ -110,7 +110,6 @@ int Open_LuaSD( vlc_object_t *p_this )
     luaL_register( L, "vlc", p_reg );
     luaopen_input( L );
     luaopen_msg( L );
-    luaopen_misc( L );
     luaopen_net( L );
     luaopen_object( L );
     luaopen_sd( L );