[libcxx-commits] [libcxx] [libc++][test] Fix-up verifying test for `is_clock(_v)` (PR #166888)

[Hristo Hristov via libcxx-commits]

H-G-Hristov wrote:

> This fixes incompleteness and inconsistency for a test file added in [adc7932](https://github.com/llvm/llvm-project/commit/adc79324618f0e95914ac0fcb26fe0d942319cab), by
> 
>     * renaming `trait.is.clock.compile.verify.cpp` to `trait.is.clock.verify.cpp`, and
> 
>     * adding comments clarifying what are being tested.

Let's rename the file to: `libcxx/test/libcxx/time/time.traits/is.clock.verify.cpp` by removing `is.clock/trait` from `libcxx/test/libcxx/time/time.traits.is.clock/trait.is.clock.verify.cpp`. I think that's the correct filename.

https://github.com/llvm/llvm-project/pull/166888