RFR: 8375463: G1: Remove AtomicAccess include from files that do not use it

[Thomas Schatzl]

Hi all,

  please review this trivial removal of unnecessary `AtomicAccess.hpp` includes. These files do not use any part of it.

The one in `g1CardSetMemory.hpp` is handled in another PR.

Testing: gha

Thanks,
  Thomas

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Commit messages:
 - 8375463

Changes: https://git.openjdk.org/jdk/pull/29278/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29278&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8375463
  Stats: 12 lines in 7 files changed: 0 ins; 7 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/29278.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29278/head:pull/29278

PR: https://git.openjdk.org/jdk/pull/29278