RFR: 8355473: Clean up x86 globals/VM_Version after 32-bit x86 removal

[Aleksey Shipilev]

This cleanup targets `globals_x86.*` and `vmVersion_x86.*` for cleanups. 

Additional testing:
 - [ ] Linux x86_64 server fastdebug, `all`

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Commit messages:
 - Fix

Changes: https://git.openjdk.org/jdk/pull/24844/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24844&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8355473
  Stats: 167 lines in 4 files changed: 0 ins; 150 del; 17 mod
  Patch: https://git.openjdk.org/jdk/pull/24844.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24844/head:pull/24844

PR: https://git.openjdk.org/jdk/pull/24844