RFR: 8303085: Runtime problem list cleanup [v2]

[Mikhailo Seledtsov]

> Identified several Runtime related entries in HotSpot problem list that could be removed because issues are no longer reproducible. Reran corresponding tests multiple times (200-400 times) before removal. See comments in the bug for details.

Mikhailo Seledtsov has updated the pull request incrementally with one additional commit since the last revision:

  Restored some entries after feedback

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12723/files
  - new: https://git.openjdk.org/jdk/pull/12723/files/262c65aa..7079cd19

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12723&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12723&range=00-01

  Stats: 7 lines in 1 file changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/12723.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12723/head:pull/12723

PR: https://git.openjdk.org/jdk/pull/12723