I followed this answer and deleted a reference to FirebaseInstanceId that seemed to be left over from when I removed the pod. Now when I build I get the error:
ld: -framework not found
clang: error: linker command failed with exit code 1 (use -v to see invocation)
For a little more clarity:
Targets
> Build Settings
> Linker Flags
> Debug
& Release
(separately) > double clicked the right side where it says -ObjC > select/click/highlight FirebaseInstanceID >
clicked the minus sign on the bottom.