RFR: 8296429: Remove os::supports_sse

[Claes Redestad]

os::supports_sse only exists to be backwards compatible with linux kernels older than 2.4, which may not have SSE support. Since support for 2.2.x kernels ended in 2004 I think we can safely clean this out.

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Commit messages:
 - Remove os::supports_sse

Changes: https://git.openjdk.org/jdk/pull/11164/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11164&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8296429
  Stats: 37 lines in 6 files changed: 0 ins; 37 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/11164.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11164/head:pull/11164

PR: https://git.openjdk.org/jdk/pull/11164