[Java] Remove deprecated code from Arrow Java

### Describe the enhancement requested

Review Arrow Java code and remove any deprecated code that does not have a comment committing to support beyond the current release.

#### Subissues

* apache/arrow-java#105
* apache/arrow-java#104
* apache/arrow-java#103
* ...

### Component(s)

Java

The issue names no files or tests; begin by reviewing the listed apache/arrow-java subissues (#105, #104, and #103) and the deprecated Java code they identify. Done means applicable deprecated code is removed unless a comment commits to support beyond the current release; clarify the remaining scope before starting.

Written by the indexing model from the issue text.