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GH-44700: [C++][Parquet] Remove obsolete parquet_constants generated files from old thrift (#44772)

### Rationale for this change

The files were generated 4 years ago with and old version of Thrift and don't seem necessary anymore.

### What changes are included in this PR?

Remove obsolete files.

### Are these changes tested?

No new tests added, just validate tests pass.

### Are there any user-facing changes?

No
* GitHub Issue: #44700

Authored-by: Raúl Cumplido <raulcumplido@gmail.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>