[jdk17] RFR: 8268861: Disable Windows-Aarch64 build in GitHub Actions

[David Holmes]

This has been failing for a while so disabling it until it can be fixed.

Thanks,
David

-------------

Commit messages:
 - 8268861: Disable Windows-Aarch64 build in GitHub Actions

Changes: https://git.openjdk.java.net/jdk17/pull/71/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=71&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268861
  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/71.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/71/head:pull/71

PR: https://git.openjdk.java.net/jdk17/pull/71