Remove unused classes

There are several classes/interfaces that are either  unused or only used within a set of classes/interfaces that are otherwise unused.  They should be removed from the system.

In core the following files are unused

• ReportTransformer, ReportFailedRuntimeException, ReportTransformerTest are mutually used but not by any class/interface outside the 3.
• RatReportAnalysisResultException
• FullTestMatchingLicense – used in old style license definition
• SimplePatternBasedLicense – used in old style license definition
• MimeTyper
• ToNameTransformer, ToNameTransformerTest
• UnsuitableDocumentException
• o.a.rat.header all classes/interfaces in this package are mutually used but not by any class outside the package.