[jdk17u-dev] RFR: 8299397: Remove metaprogramming/isFloatingPoint.hpp

[George Adams]

prerequisite to bumping googletest to 1.13.0

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Commit messages:
 - Backport ce6395a1356a3d1334aeffc70ac8e4f86dd81a4c

Changes: https://git.openjdk.org/jdk17u-dev/pull/2672/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2672&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299397
  Stats: 98 lines in 3 files changed: 0 ins; 96 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2672.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2672/head:pull/2672

PR: https://git.openjdk.org/jdk17u-dev/pull/2672