tree 90b24b59e843dfe5c14c253cf081f5395ef116d8
parent e1ce3dabf0c70d30a24f0586ddf2a965d730d30a
author Louis Dionne <ldionne.2@gmail.com> 1637333548 -0500
committer Louis Dionne <ldionne.2@gmail.com> 1637349994 -0500

[libc++] Fix feature test macro for __cpp_lib_to_chars

We would have been defining it in <utility> instead of <charconv>. For
the time being, this doesn't change anything since we don't implement
the feature test macro anyways.

Also, as a fly-by, this removes obsolete feature test macro tests. There
was a brief time back in the days when we wrote feature test macro tests
manually. In particular, we had test files for __cpp_lib_to_chars and
__cpp_lib_memory_resource. Since we now have a principled way of generating
these tests with scripts, this commit removes the obsolete (and empty)
tests for these two feature test macros.

Differential Revision: https://reviews.llvm.org/D114243