[jdk22u] RFR: 8330242: RISC-V: Simplify and remove CORRECT_COMPILER_ATOMIC_SUPPORT in atomic_linux_riscv.hpp

[Gui Cao]

This is a followup fix for JDK-8326936 which has been backported to jdk22u. I would like to also have this for jdk22u so that gcc `__atomic_compare_exchange` atomic operation could still be used for the upcoming gcc-13.3 release. This is a risc-v specific change. Backport is clean, risk is low. 

### Testing
- [x] The affected jtreg test cases all pass with jdk release built with latest gcc-13 development branch.

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Commit messages:
 - Backport cd4c3aac63ddab3d3618df09787d6e9311454ff8

Changes: https://git.openjdk.org/jdk22u/pull/146/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk22u&pr=146&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330242
  Stats: 15 lines in 1 file changed: 0 ins; 11 del; 4 mod
  Patch: https://git.openjdk.org/jdk22u/pull/146.diff
  Fetch: git fetch https://git.openjdk.org/jdk22u.git pull/146/head:pull/146

PR: https://git.openjdk.org/jdk22u/pull/146