Remove unsupported RDKit param

app.py

@@ -226,7 +226,6 @@ def _embed_smiles_in_3d(smiles: str, seed: int):
     mole = Chem.AddHs(_mol_from_smiles(smiles))
     params = AllChem.ETKDGv3()
     params.randomSeed = seed + 1
-    params.maxAttempts = 20
     status = AllChem.EmbedMolecule(mole, params)
     if status == -1:
         params.useRandomCoords = True