How do I get rid of orphaned application entries after uninstallation? Orphaned Entry in Default Calendar App Preferences (OS X Yosemite)?

The image below is the preferences pane in Calendar.app. This is where the user sets the default calendar app used by OS X globally. In OS X 10 this is set to Calendar.app by default. I use Fantastical 2 as my default calendar app. The problem is an orphaned entry is appearing -specifically MobileCal.app- (as can be seen in the image below). As far as I can recall I've never installed an app called MobileCal. Please let me know i) how to remove this orphaned entry and ii) how it got there in the first place. I'm running OS X Yosemite 10.0.3. Thanks! Additionally I'm receiving the following error when I attempt to open a reminder from Spotlight Search:
The MobileCal.app is part of Xcode's iPhone SDK, so the easiest way to get rid of that app is to either remove the Xcode completely or remove just the app. The file can be located inside the Xcode package:

Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/Applications