How to remove my way tool bar?

Try uninstalling using the Developer's uninstall instructions.

Here is detailed guide that will help you to uninstall myway search from your Mac http://removalbits.com/how-to-remove-myway-homepage-and-search-from-chrome-firef ox-and-internet-explorer

This adware is not very harmful and you don't need to replace it immediately. It's just replacing your homepage and adding toolbar, so don't worry.