Don't import suffix into global namespace

[ryandesign (Ryan Carsten Schmidt)]

portfetch.tcl​ has these lines:

# XXX import suffix into the global namespace as it is currently used from
# Portfiles, but should better go somewhere else
namespace import portfetch::suffix

We removed the use of the suffix proc from most portfiles years ago in commits such as these:

• [4b17cbb3716d026817b217365904e8b3d68f2cc6/macports-ports]
• [22eecff90e364bfa73f1191a0be46ebdd9de2fc0/macports-ports]
• [21bd4313583cb7bdfe60b7a474c66ac0b912763f/macports-ports]

The only remaining port using it is my FFView port and I should remove it from there too.

So can we stop importing suffix into the global namespace now?

[jmroot (Joshua Root)]

In dc186734c80bcc38222c3746e19ddc67666bbd42/macports-base (master):

Stop exporting portfetch::suffix

Closes: #55940