[jdk11u-dev] RFR: 8253631: Remove unimplemented CompileBroker methods after JEP-165

[Aleksey Shipilev]

Clean backport. I actually meant to try this one first after 11u Git move, but forgot; backporting this for additional cleanliness and completeness.

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Commit messages:
 - Backport dc1ef58351313a5a269a6b75396ed4a538582c0d

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/95/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=95&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253631
  Stats: 5 lines in 1 file changed: 0 ins; 5 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/95.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/95/head:pull/95

PR: https://git.openjdk.java.net/jdk11u-dev/pull/95