RFR: 8344471: Remove SecurityManager related code from java.compiler module [v2]

[Jaikiran Pai]

> Can I please get a review of this change which cleans up the SecurityManager related usages from the `java.compiler` module? 
> 
> No new tests have been introduced and existing tests in tier1, tier2 and tier3 continue to pass.

Jaikiran Pai has updated the pull request incrementally with one additional commit since the last revision:

  Roger's suggestion - inline a private method call

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22229/files
  - new: https://git.openjdk.org/jdk/pull/22229/files/62748947..d98fc871

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22229&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22229&range=00-01

  Stats: 15 lines in 1 file changed: 1 ins; 13 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22229.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22229/head:pull/22229

PR: https://git.openjdk.org/jdk/pull/22229