Update utils.py

paddle_quantum/utils.py

@@ -922,9 +922,6 @@ class Hamiltonian:
         """
         coefs, pauli_words, sites = self.decompose_with_sites()
         n_qubit = 1
-        for site in sites:
-            if type(site[0]) is int:
-                n_qubit = max(n_qubit, max(site) + 1)
         for site in sites:
             if type(site[0]) is int:
                 n_qubit = max(n_qubit, max(site) + 1)