[jdk17u-dev] RFR: 8299398: Remove metaprogramming/isConst.hpp

[George Adams]

prerequisite to bumping googletest to 1.13.0

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Commit messages:
 - Backport d812022890815c33031905e7ec489b8729a45d90

Changes: https://git.openjdk.org/jdk17u-dev/pull/2668/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2668&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299398
  Stats: 84 lines in 3 files changed: 2 ins; 81 del; 1 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2668.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2668/head:pull/2668

PR: https://git.openjdk.org/jdk17u-dev/pull/2668