RFR: 8336855: Duplicate protected declaration and comment in interp_masm_aarch64.hpp

[SendaoYan]

Hi all,
In `src/hotspot/cpu/aarch64/interp_masm_aarch64.hpp` file, there is duplicate protected declaration and comment. I think it's can be deleted safetied.

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Commit messages:
 - 8336855: Duplicate protected declaration and comment in interp_masm_aarch64.hpp

Changes: https://git.openjdk.org/jdk/pull/20271/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20271&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8336855
  Stats: 6 lines in 1 file changed: 0 ins; 4 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/20271.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20271/head:pull/20271

PR: https://git.openjdk.org/jdk/pull/20271