RFR: 8260577: Unused code in AbstractCompiler after Shark compiler removal [v2]

[Tobias Hartmann]

> After removal of the Shark compiler with [JDK-8171853](https://bugs.openjdk.java.net/browse/JDK-8171853) in JDK 10, some methods in AbstractCompiler are unused.
> 
> Thanks,
> Tobias

Tobias Hartmann has updated the pull request incrementally with one additional commit since the last revision:

  Removed CICompileNatives and CICompileOSR

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/2281/files
  - new: https://git.openjdk.java.net/jdk/pull/2281/files/c0096ea8..a95c3586

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2281&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2281&range=00-01

  Stats: 36 lines in 14 files changed: 0 ins; 33 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2281.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2281/head:pull/2281

PR: https://git.openjdk.java.net/jdk/pull/2281