RFR: 8334493: Remove SecurityManager Permissions infrastructure from DiagnosticCommands [v2]

[Kevin Walls]

> Remove redundant SecurityManager Permission  references
> (following on from JDK-8338411: Implement JEP 486: Permanently Disable the Security Manager).

Kevin Walls has updated the pull request incrementally with one additional commit since the last revision:

  Remove 'cause'

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22315/files
  - new: https://git.openjdk.org/jdk/pull/22315/files/d173aec7..8486bbe4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22315&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22315&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22315.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22315/head:pull/22315

PR: https://git.openjdk.org/jdk/pull/22315