A few minor corrections to the netgen setup file to remove a comment
that does not apply to sky130, and to set the "devices" variable back
to a null list before the ESD device processing so that the standard
FETs do not get processed twice.  Both changes have no effect on PDK
and tool functionality, but makes the code cleaner and more correct.
diff --git a/sky130/netgen/sky130_setup.tcl b/sky130/netgen/sky130_setup.tcl
index 23567d8..817ff0a 100644
--- a/sky130/netgen/sky130_setup.tcl
+++ b/sky130/netgen/sky130_setup.tcl
@@ -21,10 +21,6 @@
 set cells1 [cells list -all -circuit1]
 set cells2 [cells list -all -circuit2]
 
-# NOTE:  In accordance with the LVS manager GUI, the schematic is
-# always circuit2, so some items like property "par1" only need to
-# be specified for circuit2.
-
 #-------------------------------------------
 # Resistors (except metal)
 #-------------------------------------------
@@ -175,6 +171,7 @@
 # devices, so the tolerance is increased to 7% to cover the difference
 #---------------------------------------------------------------------
 
+set devices {}
 lappend devices sky130_fd_pr__esd_nfet_g5v0d10v5
 lappend devices sky130_fd_pr__esd_pfet_g5v0d10v5