rsz: Remove blanket invalidation

Invalidation of STA data happens transparently in the background through
ODB callbacks, there's no reason to do it explicitly.

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

Author: povik

src/rsz/src/Resizer.cc

@@ -395,9 +395,6 @@ void Resizer::removeBuffers(sta::InstanceSeq insts)
   // timing information. So initBlock(), a light version of init(), is
   // sufficient.
   initBlock();
-  // Disable incremental timing.
-  graph_delay_calc_->delaysInvalid();
-  search_->arrivalsInvalid();
   est::IncrementalParasiticsGuard guard(estimate_parasitics_);
 
   if (insts.empty()) {