The AppCenterException class looks like it is going to be use in only a very specific way. At the moment it has the following unused constructors that we don't want future contributors to accidently use meaning we need to support them.

1. public AppCenterException(Throwable throwable)
2. public AppCenterException(String s, Throwable throwable, boolean b, boolean b1)
3. public AppCenterException()

Acceptance Criteria

1. Unused exception constructors are removed.