[libc++][C++03] Fix a bunch of random tests (#144117) This fixes/removes a bunch of random tests. They all failed in relatively simple to fix ways. Specificially (all inside `libcxx/test/libcxx-03`): - `utilities/template.bitset/includes.pass.cpp`: the header guards have different names now (guard names fixed) - `utilities/meta/is_referenceable.compile.pass.cpp`: The name changed from `__libcpp_is_referenceable` (reverted name) - `utilities/function.objects/refwrap/desugars_to.compile.pass.cpp`: Optimization has been added after the header split (test removed) - `type_traits/is_replaceable.compile.pass.cpp`: `__is_replacable_v` has been added after the header split (test removed) - `type_traits/is_constant_evaluated.pass.cpp`: Ran C++11 code accidentally (C++11 test parts removed) - `type_traits/desugars_to.compile.pass.cpp`: Optimization has been added after the header split (test removed) - `numerics/bit.ops.pass.cpp`: Tried to include header which doesn't exist (removed include and related code which wasn't executed in C++03) - `experimental/fexperimental-library.compile.pass.cpp`: This test is irrelevant for C++03, since there are no C++03 experimental features (test removed) - `containers/container_traits.compile.pass.cpp`: `container_traits` have been introduced after the header split (test removed)
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