Rigify and WGT bones So this guide https://docs.unity3d.com/Manual/BlenderAndRigify.html
says to delete the WGT bones.

I'm guessing these are bones that were used to create the control polys for the rig... so why are these left laying around overcrowding my view tree instead of being deleted when the rig is done being generated?

Is there a way to easily remove the (100 some odd?) WGT bones all at once?
Select them by name in Object Mode Menu:Select / Select pattern,
Type WGT*   
Delete the selected objects with X. 
Open a text region and paste this script and press the run script button:


import bpy

scene = bpy.context.scene
for o in bpy.data.objects:
    print(o.name)
    if o.name.startswith('WGT'):
        o.select = True
        scene.objects.unlink(o)