mediainfo, mediainfolib: Remove master_sites override

[ryandesign (Ryan Carsten Schmidt)]

Next time the version of the mediainfo and mediainfolib ports is updated, please remove this line:

master_sites        https://github.com/MediaArea/${name}/archive/v${version}

It is not recommended to override the master_sites set by the portgroup, if your intention is to fetch from a standard GitHub URL.

But don't remove it without also updating the port's version, because it will cause the distfile's checksums to change.

[ryandesign (Ryan Carsten Schmidt)]

In 69e722d86345c9f2db841476365c52a2fe7112ed/macports-ports:

mediainfo, mediainfolib: Update to 18.03.1

Closes: #55711