Merge pull request #1967 from Pinata-Consulting/mock-array-cleanup

mock-array:  use CTS_BUF_DISTANCE to make mock-array less brittle

Author: maliberty

flow/designs/asap7/mock-array/config.mk

@@ -57,4 +57,4 @@ export FASTROUTE_TCL = ./designs/$(PLATFORM)/mock-array/fastroute.tcl
 export MACRO_HALO_X            = 0.5
 export MACRO_HALO_Y            = 0.5
 
-export CTS_ARGS = -sink_clustering_enable -balance_levels -distance_between_buffers 60
+export CTS_BUF_DISTANCE = 60