mootools.js optimization

I welcome, I have such a question whether the mootools.js file is required through theme Sporter? because I read that largely he wasn't required at all through joomla theme. I am asking therefore because I am hastening loading my side and the mootools.js file causes slow loading. Similarly he is from k2.css whether it is possible somehow or other to optimize them? as for now I managed to achieve the result on the level 0,816 sec. from the dependence on burdening the server, and the thanks for these changes the result will be even better..

Thanks Tomash

Hi

Unfortunately both this cases are important. Did You run the test wit for example YSlow to seethe tips on how to make it run faster ?