RFR: 8368180: RISC-V: Remove redundant ext_Zicboz.enable_feature()

[Dingli Zhang]

Hi,
Can you help to review this patch? Thanks!

We can clean up the duplicate call to ext_Zicboz.enable_feature() in VM_Version::rivos_features(), as it is already invoked at https://github.com/openjdk/jdk/blob/cc65836d00de7041e7d32e7f15d98108b1ae47a0/src/hotspot/os_cpu/linux_riscv/vm_version_linux_riscv.cpp#L286

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Commit messages:
 - 8368180: RISC-V: Remove redundant ext_Zicboz.enable_feature()

Changes: https://git.openjdk.org/jdk/pull/27409/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27409&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368180
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27409.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27409/head:pull/27409

PR: https://git.openjdk.org/jdk/pull/27409