gulpfile - comment out the task loading by default

so it doesn't log an error when there's no `task` folder

gulpfile.js

@@ -189,4 +189,4 @@ gulp.task('pagespeed', pagespeed.bind(null, {
 }));
 
 // Load custom tasks from the `tasks` directory
-try { require('require-dir')('tasks'); } catch (err) { console.error(err); }
+//try { require('require-dir')('tasks'); } catch (err) { console.error(err); }