Make calendar just show nditcommunity@gmail.com

Right now, the calendar displays a hybrid of the user's calendar and the nditcommunity@gmail.com calendar. This will make it just the ND In Tech one.

[https://github.com/nditcommunity/nditcommunity.github.io/pull/102](https://github.com/nditcommunity/nditcommunity.github.io/pull/102)