NH-3974 - Eliminate usages of SqlStringHelper.RemoveAsAliasesFromSql

**Alexander Zaytsev** created an issue — <time datetime="2017-03-30T21:01:04.388Z" title="2017-03-30T21:01:04.388Z">30th March 2017, 21:01:04</time>:
> `SqlStringHelper.RemoveAsAliasesFromSql` is used in Criteria API for group by, orders, etc. It is easier achievable with providing additional method which does not generate alias in first.
> 