remove unused int_rnd function (#23717)

* testing

* revert

Co-authored-by: Adeeb Shihadeh <adeebshihadeh@gmail.com>
old-commit-hash: 12b48dcfb0

common/numpy_fast.py

@@ -1,6 +1,3 @@
-def int_rnd(x):
-  return int(round(x))
-
 def clip(x, lo, hi):
   return max(lo, min(hi, x))