There used to be a mix of qt5-<foo> and <foo>-qt5 ports all of which
were Qt components. The semantics of ports naming have been rationalized
by kde@, and now qt5-<foo> is the Qt5 component called foo; <foo>-qt5
is a port <foo> that uses Qt5. For instance, wireshark-qt5 is not a
Take out the check that suggests that all <foo>-qt5 ports should be
part of USE_QT5, since all of those suggestions are wrong.