RFR: 8310711: [IR Framework] Remove safepoint while printing handling

Fri Dec 1 12:54:12 UTC 2023

This clean-up PR removes the handling of the `` message in the IR framework. It is no longer required since we dump the output of `PrintIdeal` to the hotspot_pid file differently since [JDK-8306922](https://bugs.openjdk.org/browse/JDK-8306922). There is no interrupting `` message anymore. I removed the corresponding now unneeded code together with the previously added test case for it.

Testing: tier1-4

Thanks,
Christian

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Commit messages:
 - 8310711: [IR Framework] Remove safepoint while printing handling

Changes: https://git.openjdk.org/jdk/pull/16921/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16921&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310711
  Stats: 459 lines in 6 files changed: 0 ins; 457 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/16921.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16921/head:pull/16921

PR: https://git.openjdk.org/jdk/pull/16921