[libcxx][nfc] Cleanup libc++ specific tests.
authorMark de Wever <koraq@xs4all.nl>
Fri, 23 Jul 2021 15:19:34 +0000 (17:19 +0200)
committerMark de Wever <koraq@xs4all.nl>
Fri, 23 Jul 2021 16:42:23 +0000 (18:42 +0200)
Move the tests to libcxx so they no longer need `REQUIRES: libc++`.
Verify tests don't need `REQUIRES: libc++`.

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D106673

libcxx/test/libcxx/input.output/filesystems/class.path/path.member/path.native.obs/string_alloc.pass.cpp [moved from libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/string_alloc.pass.cpp with 99% similarity]
libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/libcxx.control_block_layout.pass.cpp [moved from libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/libcxx.control_block_layout.pass.cpp with 99% similarity]
libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_move.nodiscard.verify.cpp