Removed unneeded argument to a boolean flag

This was messing up the input file, output file, and geometry
file arguments.
Merge branch 'master' of github.com:PediatricAirways/AirwaySegmenter
Revert "Fixed issue with shared library builds on Windows"

This reverts commit 205a5c5244ebcebcd6af336355279dfde29d7919.

This introduced a dependency on Slicer, which we don't want.
Add calling convention modifier for Win32