[jdk11u-dev] RFR: 8248671: AArch64: Remove unused variables

[Reka Kovacs]

Tiny change, applies cleanly.

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Commit messages:
 - Backport dff37f89c5db93ce12f45334c4ab1d02390dea95

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/261/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=261&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8248671
  Stats: 2 lines in 2 files changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/261.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/261/head:pull/261

PR: https://git.openjdk.java.net/jdk11u-dev/pull/261