from `(!_HAS_CXX20)` to `(_HAS_FEATURES_REMOVED_IN_CXX20)` after both #380 and #470 are merged per discussion at https://github.com/microsoft/STL/pull/470#issuecomment-580692347.
from
(!_HAS_CXX20)to(_HAS_FEATURES_REMOVED_IN_CXX20)after both #380 and #470 are merged per discussion at #470 (comment).