RFR: Remove passing tests from ProblemList.txt [v2]

[William Kemper]

> Recent test runs suggest that all but three tests are now passing. The remaining failures are believed to be fixed by https://github.com/openjdk/shenandoah/pull/248.

William Kemper has updated the pull request incrementally with one additional commit since the last revision:

  Disable tests which failed in GHA

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

Changes:
  - all: https://git.openjdk.org/shenandoah/pull/273/files
  - new: https://git.openjdk.org/shenandoah/pull/273/files/4c57a0da..98210777

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=shenandoah&pr=273&range=01
 - incr: https://webrevs.openjdk.org/?repo=shenandoah&pr=273&range=00-01

  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/shenandoah/pull/273.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah.git pull/273/head:pull/273

PR: https://git.openjdk.org/shenandoah/pull/273