Does anyone know how to set up the post process options to get rid of the line numbers?

It depends on how you edit your post processor. If you use the UPG then under the MISC tab in the Sequence and Sequence Output section select No Seq. Numbers.

If you manually updat the posts in Notepad or the like (which is what I do) the modify the :C: SEQ_CONFIG=(YOUR VALUE) TO :C: SEQ_CONFIG=3 IN THE :SECTION=CALC_INIT_CODES. See below:

:SECTION=CALC_INIT_CODES
:C: DEFINING_MACRO=NO
:C: OFFSET_RESIDENT=NO
:C: SEQ=1
:C: SEQ_INCREMENT=1
:C: MAX_SEQUENCE=99999
:C: WORK_COORD_CONFIG=NO
:C: END_OF_TAPE_PRELOAD=NO
:C: NO_SMALL_ARC=NO
:C: ARC_ROUNDING_POINT=.00005
:C: HOLD_Z_DOWN_FLAG=0
:C: LAST_PRELOAD=0
:C: SEQ_CONFIG=1
:C: AIC=1
:C: COMP_OFFSET=0
:C: FEEDTYPE=1
:C: N=N
:C: MULTIAXIS_TYPE=0
:C: ROTATION_DIRECTION=0
*

Hope this helps.