RFR: JDK-8301466: [AIX] Revisit CommittedVirtualMemoryTest

[Varada M]

We can now enable AIX on [CommitedVirtualMemoryTest](https://github.com/openjdk/jdk/blob/master/test/hotspot/gtest/runtime/test_committed_virtualmemory.cpp#L35)  

JBS Issue : [JDK-8301466](https://bugs.openjdk.org/browse/JDK-8301466)

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Commit messages:
 - JDK-8301466: [AIX] Revisit CommittedVirtualMemoryTest

Changes: https://git.openjdk.org/jdk/pull/17371/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17371&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301466
  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/17371.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17371/head:pull/17371

PR: https://git.openjdk.org/jdk/pull/17371