refactor: Removed some unused Parquet APIs

[malhotrashivam]

Originally added in #5989, moved as a separate PR for ease of review/testing.

Breaking Changes:

• Removed optional paramater extraColumns from io.deephaven.parquet.table.MappedSchema.create
• Removed these methods;
  • ParquetInstructions::setDefaultCompressionCodecName
  • ParquetInstructions::getDefaultCompressionCodecName
  • ParquetInstructions::setDefaultMaximumDictionaryKeys
  • ParquetInstructions::getDefaultMaximumDictionaryKeys
  • ParquetInstructions::setDefaultMaximumDictionarySize
  • ParquetInstructions::getDefaultMaximumDictionarySize
  • ParquetInstructions::setDefaultTargetPageSize
  • ParquetInstructions::getDefaultTargetPageSize