[jdk17u-dev] RFR: 8300265: Remove metaprogramming/isSigned.hpp [v3]

[George Adams]

> Prerequisite to bumping gtest, applies cleanly

George Adams has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge remote-tracking branch 'upstream/pr/2692' into isSigned
 - Merge remote-tracking branch 'upstream/pr/2692' into isSigned
 - Backport 03a9a88efbb68537e24b7de28c5b81d6cd8fdb04

-------------

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/2693/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/2693/files/8032d036..a9c1f317

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2693&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2693&range=01-02

  Stats: 83 lines in 2 files changed: 0 ins; 83 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2693.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2693/head:pull/2693

PR: https://git.openjdk.org/jdk17u-dev/pull/2693