Remove long ignored test and base class
Remove now unused statement splitter
Remove unused MapDiff helper
Remove unused MessageDigestWriter helper
Remove unused exception helper methods
Remove unused test DDL helper
Use Java 7 deepEquals
TapBean replaced by system procedures a while ago
merge nathanlws: Remove some unused/unnecessary Util classes

Merge pull request #1400 from nathanlws/sql-layer/util-cleanup
https://github.com/FoundationDB/sql-layer/pull/1400