RFR: 8370229: Remove unused method declarations after JDK-8322630

[Francesco Andreuzzi]

Trivial removal of two methods declarations which are unused after JDK-8322630.

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Commit messages:
 - remove

Changes: https://git.openjdk.org/jdk/pull/27923/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27923&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370229
  Stats: 5 lines in 1 file changed: 0 ins; 5 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27923.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27923/head:pull/27923

PR: https://git.openjdk.org/jdk/pull/27923