RFR: 8293294: Remove dead code in Parse::check_interpreter_type

[Matthijs Bijman]

A small cleanup in Parse::check_interpreter_type to remove two dead declarations.

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Commit messages:
 - 8293294: Remove dead code in Parse::check_interpreter_type

Changes: https://git.openjdk.org/jdk/pull/11325/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11325&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8293294
  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/11325.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11325/head:pull/11325

PR: https://git.openjdk.org/jdk/pull/11325