[Java.Interop.Tools.JavaSource] Don't emit `[TODO: * ]` in summaries

[pjcollins]

See: https://github.com/xamarin/java.interop/blob/7574f166008bb45c0df97315aae7907ac25f8602/src/Java.Interop.Tools.JavaSource/Java.Interop.Tools.JavaSource/SourceJavadocToXmldocGrammar.InlineTagsBnfTerms.cs#L39

After reviewing some of the API 31 docs diff, I noticed a few places where we're emitting [TODO: *] in various summaries:

We should emit appropriate data in these places.