[SPARK-15198][SQL] Support for pushing down filters for boolean types in ORC data source

## What changes were proposed in this pull request?

It seems ORC supports all the types in  ([`PredicateLeaf.Type`](https://github.com/apache/hive/blob/e085b7e9bd059d91aaf013df0db4d71dca90ec6f/storage-api/src/java/org/apache/hadoop/hive/ql/io/sarg/PredicateLeaf.java#L50-L56)) which includes boolean types. So, this was tested first.

This PR adds the support for pushing filters down for `BooleanType` in ORC data source.

This PR also removes `OrcTableScan` class and the companion object, which is not used anymore.

## How was this patch tested?

Unittest in `OrcFilterSuite` and `OrcQuerySuite`.

Author: hyukjinkwon <gurwls223@gmail.com>

Closes #12972 from HyukjinKwon/SPARK-15198.