RFR: 8329141: Obsolete RTM flags and code

[Vladimir Kozlov]

Obsolete HotSpot RTM flags which were deprecated in JDK 23.
RTM related VM code and tests were removed.

Tested tier1-3,stress,xcomp

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Commit messages:
 - 8329141: Obsolete RTM flags and code

Changes: https://git.openjdk.org/jdk/pull/19589/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19589&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8329141
  Stats: 6396 lines in 97 files changed: 27 ins; 6334 del; 35 mod
  Patch: https://git.openjdk.org/jdk/pull/19589.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19589/head:pull/19589

PR: https://git.openjdk.org/jdk/pull/19589