PR gh-25429 brought it to our attention that there was a bug in AnnotationScanner when using a non-null class filter that filtered out classes; however, it turns out that there is no production code that utilizes the package-private class filtering support.
This commit therefore removes all class filtering support from AnnotationScanner since that functionality was effectively unused.
Comment From: sbrannen
@philwebb and @jhoeller, I've requested your review of this PR.
I assume there was originally an intent to utilize the class filtering functionality in AnnotationScanner, but since this functionality is currently not used, I figured we should simply remove it altogether.
Thus, if you don't foresee any need to keep this functionality in place, I'll merge this PR for 5.2.x and master.