RFR: 8308236: Remove SystemDictionaryShared::clone_dumptime_tables() [v3]

[Ioi Lam]

> This function was necessary because we were patching the pointers inside `SystemDictionaryShared::_dumptime_table` when dumping the CDS archive. We no longer do that since [JDK-8307567](https://bugs.openjdk.org/browse/JDK-8307567), so this function and related code can be removed.

Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:

  Removed unrelated change

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14020/files
  - new: https://git.openjdk.org/jdk/pull/14020/files/fd76e923..dda5f66b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14020&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14020&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14020.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14020/head:pull/14020

PR: https://git.openjdk.org/jdk/pull/14020