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

[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.

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Commit messages:
 - 8344471: Remove SecurityManager related code from java.compiler module

Changes: https://git.openjdk.org/jdk/pull/22229/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22229&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344471
  Stats: 9 lines in 1 file changed: 0 ins; 6 del; 3 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