Revert "A timer app"

This reverts commit 9c9280f261eab7634a77c9ef5788a32c179423fe.

Conflicts:

Timer.xcodeproj/project.xcworkspace/xcuserdata/Melvine.xcuserdatad/UserI
nterfaceState.xcuserstate
	Timer/Base.lproj/Main.storyboard