[jdk17u-dev] RFR: 8299479: Remove metaprogramming/decay.hpp [v2]

[George Adams]

> prerequisite to bumping googletest to 1.13.0
> 
> Applies cleanly other than the deleted file (`src/hotspot/share/metaprogramming/decay.hpp`) containing some extra commits

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.

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Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/2675/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/2675/files/c155b8c2..c155b8c2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2675&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2675&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2675.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2675/head:pull/2675

PR: https://git.openjdk.org/jdk17u-dev/pull/2675