UnusedImportRemover fails for same-package nested class imports

[adityajidhonde]

Edge case in UnusedImportRemoverVisitor.java. The current logic for same-package imports relies on a . not being present after the package name, which works for top-level classes but could fail for nested classes.

[kelloggm]

This class no longer exists after the refactor merged in #421 and I think this bug was (probably) fixed as part of that. Since there's no failing test cases, closing as not reproducible.