[jdk17u-dev] RFR: 8275440: Remove VirtualSpaceList::is_full()

[Goetz Lindenmaier]

A small test stabilization fix.

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Commit messages:
 - Backport c9e65f8ef926c3796867558afa536770eed71cd6

Changes: https://git.openjdk.org/jdk17u-dev/pull/1795/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1795&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8275440
  Stats: 15 lines in 3 files changed: 0 ins; 13 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1795.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1795/head:pull/1795

PR: https://git.openjdk.org/jdk17u-dev/pull/1795