Merge pull request #3359 from The-OpenROAD-Project-staging/ihp-pdn-update

ihp: rm unused TopMetal2 add_pdn_connect stmts (now an error)

Author: maliberty

flow/platforms/ihp-sg13g2/pdn.tcl

@@ -29,7 +29,4 @@ add_pdn_stripe -grid {grid} -layer {TopMetal1} -width {1.800} -pitch {75.6} -off
   -extend_to_core_ring
 add_pdn_connect -grid {grid} -layers {Metal1 Metal5}
 add_pdn_connect -grid {grid} -layers {Metal5 TopMetal1}
-# I/O pads
-add_pdn_connect -grid {grid} -layers {Metal5 TopMetal2}
-add_pdn_connect -grid {grid} -layers {TopMetal1 TopMetal2}
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