RFR: 8344187: Remove SecurityManager and related calls from java.lang.instrument [v2]

[Kevin Walls]

> Remove redundant SecurityManager, AccessController references
> (following on from JDK-8338411: Implement JEP 486: Permanently Disable the Security Manager).
> 
> test/jdk/java/lang/instrument/ still passing.

Kevin Walls has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - static block not needed
 - Merge remote-tracking branch 'upstream/master' into 8344187_PostSM_instrument
 - update
 - 8344187: Remove SecurityManager and related calls from java.instrument

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22106/files
  - new: https://git.openjdk.org/jdk/pull/22106/files/99e5f003..f9699b08

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22106&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22106&range=00-01

  Stats: 62940 lines in 759 files changed: 31070 ins; 29188 del; 2682 mod
  Patch: https://git.openjdk.org/jdk/pull/22106.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22106/head:pull/22106

PR: https://git.openjdk.org/jdk/pull/22106