Remove the calculator test (#4093)
Remove the calculator test (#4093)

Fixes the breakage that https://github.com/flutter/flutter/pull/4092 would cause.
flutter/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,tvolkert/flutter,cbracken/flutter,flutter/flutter,Hixie/flutter,cbracken/flutter,tvolkert/flutter,Hixie/flutter,tvolkert/flutter,aghassemi/flutter,cbracken/flutter,cbracken/flutter,cbracken/flutter,turnidge/flutter,tvolkert/flutter,Hixie/flutter,cbracken/flutter,tvolkert/flutter,Hixie/flutter,aghassemi/flutter,cbracken/flutter,turnidge/flutter,cbracken/flutter,tvolkert/flutter,turnidge/flutter,flutter/flutter,tvolkert/flutter,flutter/flutter,Hixie/flutter,turnidge/flutter,Hixie/flutter,flutter/flutter,flutter/flutter,Hixie/flutter,tvolkert/flutter,aghassemi/flutter,cbracken/flutter,cbracken/flutter,Hixie/flutter,Hixie/flutter,aghassemi/flutter,flutter/flutter,turnidge/flutter,Hixie/flutter,flutter/flutter,tvolkert/flutter