RFR: 8309196: Remove Thread.countStackFrames [v2]

[Alan Bateman]

> Thread.countStackFrames is/was an ill-defined method that dates from JDK 1.0 for counting the stack frames of a suspended Thread. The method was deprecated in JDK 1.2 (1998), deprecated for removal in Java 9, and re-specified/degraded to throw UOE unconditionally in Java 14.  Java 22 would be a fine time to finally remove this method.
> 
> Code that wants to count stack frames should be directed to use j.l.StackWalker, or if a tool, then it can use JVM TI and other tool APIs.
> 
> A corpus analysis of 30M classes in 131k artifacts from Maven Central found only 1 usages to this method. The 1 usage appears to be a class that just wraps all methods, it doesn't actually make use of it.

Alan Bateman has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge
 - Initial commit

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14257/files
  - new: https://git.openjdk.org/jdk/pull/14257/files/36138f34..e44c3c49

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14257&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14257&range=00-01

  Stats: 48558 lines in 577 files changed: 40570 ins; 5940 del; 2048 mod
  Patch: https://git.openjdk.org/jdk/pull/14257.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14257/head:pull/14257

PR: https://git.openjdk.org/jdk/pull/14257