* googlevideo.lua: add small comment to explain why we're not getting the meta data.

share/luaplaylist/googlevideo.lua

@@ -9,5 +9,7 @@ end
 
 -- Parse function.
 function parse()
+    -- We don't need to get the meta data here since it'll be available in
+    -- the GVP file.
     return { { path = string.gsub( vlc.path, "^.*(docid=[^&]*).*$", "http://video.google.com/videogvp?%1" ) } }
 end