RFR: 8341916: Remove ProtectionDomain related hotspot code and tests [v5]

[Coleen Phillimore]

> Remove Hotspot code that passes protection_domain around class loading so that checkPackageAccess can be called and the result stored.  With the removal of the Security Manager in JEP 486, this code no longer does anything.
> 
> Tested with tier1-4.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Purge last references to SecurityManager.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22064/files
  - new: https://git.openjdk.org/jdk/pull/22064/files/ca34fc5b..aee8efd3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22064&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22064&range=03-04

  Stats: 4 lines in 3 files changed: 0 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22064.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22064/head:pull/22064

PR: https://git.openjdk.org/jdk/pull/22064