code: def remove_precomputed_replacements(self, expr: Expr) -> Expr:
      if any(s.name.startswith("ps") for s in expr.free_symbols):
          return sympy_subs(expr, self.inv_precomputed_replacements)
      return expr
  
imports: import functools
  import itertools
  import logging
  from typing import Any, Callable, Dict, Iterable, List, Optional, Set, Tuple, Union
  import sympy
  from sympy import Expr
  from torch.fx.experimental.symbolic_shapes import ShapeEnv
  from torch.utils._sympy.functions import FloorDiv, ModularIndexing
  from torch.utils._sympy.value_ranges import bound_sympy
  from .utils import sympy_subs, sympy_symbol, VarRanges
  from .virtualized import V
label_desc: Use image node_id 24 for calling the SizeVarAllocator obj's underlying member method code with example usage: obj.remove_precomputed_replacements(expr) and returns: expr, sympy_subs