RFR: 8341916: Remove ProtectionDomain related hotspot code and tests [v7]

[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:

  Fix comments.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22064/files
  - new: https://git.openjdk.org/jdk/pull/22064/files/14e11e59..dd1766ed

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22064&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22064&range=05-06

  Stats: 3 lines in 1 file changed: 0 ins; 2 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