RFR: 8312259: StatusResponseManager unused code clean up

[Xue-Lei Andrew Fan]

Hi,

May I have the code cleanup update reviewed?  With this update, the unused code in StatusResponseManager.java will be removed.

Thanks,
Xuelei

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Commit messages:
 - 8312259: StatusResponseManager unused code clean up

Changes: https://git.openjdk.org/jdk/pull/14924/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14924&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312259
  Stats: 144 lines in 1 file changed: 0 ins; 142 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14924.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14924/head:pull/14924

PR: https://git.openjdk.org/jdk/pull/14924