RFR: 8368861: [TEST] compiler/floatingpoint/ScalarFPtoIntCastTest.java expects x86 IR on non-x86 platforms

[Richard Reingruber]

This removes X86 specific IR checks that are applied if the X86 specific feature *avx10_2* is not present.

We could make the checks dependent on the platform being X86 if we wanted to keep them but I don't see a value in doing so.

Tested on X86 and PPC64

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Commit messages:
 - Must not expect X86 IR if avx10_2 is not present

Changes: https://git.openjdk.org/jdk/pull/27546/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27546&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368861
  Stats: 16 lines in 1 file changed: 0 ins; 16 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27546.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27546/head:pull/27546

PR: https://git.openjdk.org/jdk/pull/27546