diff --git a/qiskit/transpiler/passes/optimization/drop_negligible.py b/qiskit/transpiler/passes/optimization/drop_negligible.py
index 50fee79c3b2b..c108a2d51cf7 100644
--- a/qiskit/transpiler/passes/optimization/drop_negligible.py
+++ b/qiskit/transpiler/passes/optimization/drop_negligible.py
@@ -16,8 +16,6 @@
 
 import math
 
-import numpy as np
-
 from qiskit.circuit.library import (
     CPhaseGate,
     PhaseGate,
@@ -66,10 +64,13 @@ def run(self, dag: DAGCircuit) -> DAGCircuit:
         for node in dag.op_nodes():
             if not isinstance(node.op, DROP_NEGLIGIBLE_GATE_CLASSES):
                 continue
-            if not all(isinstance(param, (int, float, complex)) for param in node.op.params):
+            if not all(
+                isinstance(param, (int, float, complex)) for param in node.op.params
+            ):
                 continue
             if all(
-                math.isclose(param, 0, rel_tol=0, abs_tol=self.atol) for param in node.op.params
+                math.isclose(param, 0, rel_tol=0, abs_tol=self.atol)
+                for param in node.op.params
             ):
                 dag.remove_op_node(node)
         return dag
diff --git a/test/python/transpiler/test_drop_negligible.py b/test/python/transpiler/test_drop_negligible.py
index 6000b87858c3..367d9b514dd4 100644
--- a/test/python/transpiler/test_drop_negligible.py
+++ b/test/python/transpiler/test_drop_negligible.py
@@ -14,7 +14,6 @@
 
 import numpy as np
 
-from qiskit import QuantumCircuit, QuantumRegister
 from qiskit.circuit import Parameter, QuantumCircuit, QuantumRegister
 from qiskit.circuit.library import (
     CPhaseGate,