note that chop is not supported by SparsePauliOp either (#8895) (#8911)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
(cherry picked from commit c950549)

Co-authored-by: Kevin J. Sung <kevjsung@umich.edu>

qiskit/quantum_info/operators/symplectic/sparse_pauli_op.py

@@ -70,7 +70,8 @@ class SparsePauliOp(LinearOp):
       - ``to_matrix(sparse=True)`` since ``scipy.sparse`` cannot have objects as elements.
       - ``to_operator()`` since :class:`~.quantum_info.Operator` does not support objects.
       - ``sort``, ``argsort`` since :class:`.ParameterExpression` does not support comparison.
-      - ``equiv`` since :class:`.ParameterExpression`. cannot be converted into complex.
+      - ``equiv`` since :class:`.ParameterExpression` cannot be converted into complex.
+      - ``chop`` since :class:`.ParameterExpression` does not support absolute value.
     """
 
     def __init__(self, data, coeffs=None, *, ignore_pauli_phase=False, copy=True):