Removed a wayward line from the tech file that was a non-syntactical
marker and should not have been committed.

sky130/magic/sky130.tech

diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index fe37ce2..93a8df9 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -2029,7 +2029,6 @@
 #---------------------------------------------------
 # MET3 fill
 #---------------------------------------------------
-XXX
  templayer      obstruct_m3 allm3,allpad,obsm3,m3fill,fillblock,fillblock4
         grow    3000
  templayer	met3fill_coarse topbox