RFR: 8327624: Remove VM implementation that bypass verification for core reflection

[Mandy Chung]

The old core reflection implementation generates dynamic classes that are special cases in the VM to bypass bytecode verification to workaround various issues [1] [2] [3] uncovered over time.

The old core reflection implementation was [removed in JDK 22](https://bugs.openjdk.org/browse/JDK-8305104).   These VM hacks can be removed together with the old implementation of  `sun.reflect.ReflectionFactory::newConstructorForSerialization`.   In addition, the special metaspace for reflection can also be removed.   I will create a separate issue to remove `Metaspace::ReflectionMetaspaceType` and update existing GTests together.

[1] [JDK-4486457](https://bugs.openjdk.org/browse/JDK-4486457)
[2] [JDK-4474172](https://bugs.openjdk.org/browse/JDK-4474172)
[3] [JDK-6790209](https://bugs.openjdk.org/browse/JDK-6790209)

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Commit messages:
 - 8327624: Remove VM implementation that bypass verification for core reflection

Changes: https://git.openjdk.org/jdk/pull/21571/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21571&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327624
  Stats: 981 lines in 17 files changed: 0 ins; 973 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/21571.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21571/head:pull/21571

PR: https://git.openjdk.org/jdk/pull/21571