RFR: 8341916: Remove ProtectionDomain related hotspot code and tests [v2]

[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 two additional commits since the last revision:

 - More purging of AccessController, AccessControlContext and some stackwalking questions.
 - David comments.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22064/files
  - new: https://git.openjdk.org/jdk/pull/22064/files/c7b5fd13..79831e0d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22064&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22064&range=00-01

  Stats: 79 lines in 8 files changed: 3 ins; 73 del; 3 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