CAM: Dropped trailing percent from fanuc post processor output. (#26617)

* CAM: Dropped trailing percent from fanuc post processor output.

A trailing percent cause one Fanuc controller to hang when the program
is completed when drip feeding G code, and the minicom ascii upload
was unable to complete the upload.

Had to use emergecy stop to get the machine out of the hang.

* CAM: Adjust Fanuc post processor test to no longer expect trailing percent.

src/Mod/CAM/Path/Post/scripts/fanuc_post.py

@@ -348,7 +348,6 @@ def export(objectslist, filename, argstring):
         gcode += "(BEGIN POSTAMBLE)\n"
     for line in POSTAMBLE.splitlines():
         gcode += linenumber() + line + "\n"
-    gcode += "%\n"
 
     if FreeCAD.GuiUp and SHOW_EDITOR:
         dia = PostUtils.GCodeEditorDialog()