pfPorts: Remove upload_progress_meter

A local port and source code that was found to not be in use by any
pfSense release back to 1.2. Has not been touched neither seemed to
be in use back to 2005.

Time to say good bye to this port, thank you Jeb for you
contribution back then.
Merge pull request #68 from matsimon/upload_progress_meter-removal

pfPorts: Remove upload_progress_meter