As noted in https://github.com/llvm/llvm-project/pull/188406 comments,
the documentation recommends guarding only with
__has_feature(address_sanitizer). This patch updates the test to follow
the same pattern by removing the
__SANITIZER_DISABLE_CONTAINER_OVERFLOW__ checks. Having this macro
defined results in the common_interface_defs.h header defining the
contiguous container functions as no-ops anyway.
This is a followup to https://github.com/llvm/llvm-project/pull/188406.