Autocad SHX PDFSHX = 0 to remove comment in PDF

Solution:
On the command line in AutoCAD, enter EPDFSHX and change the value to 0 (zero). In AutoCAD 2017, the command PDFSHX maps to EPDFSHX (either may be typed in). For AutoCAD 2016, the core AutoCAD 2016 Service Pack 1 must be installed in order to have the EPDFSHX variable (see Autodesk Downloads).