rsz: Remove parasitics ops from unbuffer utility

Invalidating parasitics happens transparently through ODB callbacks.
Updating parasitics should be left to the caller to manage.

There are three users of this helper today:

 * remove_buffers user command
 * repair_setup unbuffer move
 * rebuffering code

All are accounted for with this change.

Signed-off-by: Martin Povišer <[email protected]>

Author: povik

src/rsz/src/Resizer.cc

@@ -423,6 +423,7 @@ void Resizer::removeBuffers(sta::InstanceSeq insts)
     }
   }
   unbuffer_move_->commitMoves();
+  estimate_parasitics_->updateParasitics();
   level_drvr_vertices_valid_ = false;
   logger_->info(RSZ, 26, "Removed {} buffers.", unbuffer_move_->numMoves());
 }

src/rsz/src/UnbufferMove.cc

@@ -468,10 +468,6 @@ void UnbufferMove::removeBuffer(Instance* buffer)
       db_survivor->rename(new_net_name->c_str());
     }
   }
-
-  estimate_parasitics_->removeNetFromParasiticsInvalid(removed);
-  estimate_parasitics_->parasiticsInvalid(survivor);
-  estimate_parasitics_->updateParasitics();
 }
 
 }  // namespace rsz