If you've installed the Xolo ROM from the xolo.in website, and you've obtained root using the AIO-tool from the forum, then you can use an application like Root Explorer from the Play Store to remove unwanted system applications.
However if you wait a few days, the AIO-tool will be updated to provide an option to remove all the bundled applications from the Xolo ROM so you end up with a close-to-stock ROM. I run my phone like this now and the difference is quite noticeable. Better battery life for example since I don't have the silly Xolo updater or the SocialGallery running and eating up my battery.
There isn't a way to drag and delete system apps from your device that I'm aware of.