Address Qiskit 2.0 linting issues (#1551)

Some parts of the code that retain deprecated features for Qiskit 1.0
are causing pylint errors now that Qiskit 2.0 has been released and is
being used in the pylint environment. Here explicit disabling of pylint
in those areas is added and can remain until those parts of the code can
be removed.

Author: wshanks

qiskit_experiments/test/pulse_backend.py

@@ -345,9 +345,12 @@ def solve(self, schedule, qubits: Tuple[int]) -> np.ndarray:
         Returns:
             Time-evolution unitary operator
         """
+        # pylint: disable=import-error,no-name-in-module
         from qiskit.pulse import ScheduleBlock
         from qiskit.pulse.transforms import block_to_schedule
 
+        # pylint: enable=import-error,no-name-in-module
+
         if len(qubits) > 1:
             raise QiskitError("Multi qubit gates are not yet implemented.")
 
@@ -503,9 +506,12 @@ def __init__(
             atol: Absolute tolerance during solving.
             rtol: Relative tolerance during solving.
         """
+        # pylint: disable=import-error,no-name-in-module
         from qiskit.providers.models import PulseDefaults  # pylint: disable=no-name-in-module
         from qiskit.providers.models.pulsedefaults import Command
         from qiskit.qobj.pulse_qobj import PulseQobjInstruction
+
+        # pylint: enable=import-error,no-name-in-module
         from qiskit_dynamics.pulse import InstructionToSignals
 
         qubit_frequency_02 = 2 * qubit_frequency + anharmonicity

test/data_processing/base_data_processor_test.py

@@ -46,8 +46,11 @@ def setUp(self):
                     message=".*QobjDictField.*",
                     category=DeprecationWarning,
                 )
+                # pylint: disable=import-error,no-name-in-module
                 from qiskit.qobj.common import QobjExperimentHeader
 
+                # pylint: enable=no-name-in-module
+
                 self.header = QobjExperimentHeader(
                     memory_slots=2,
                     metadata={"experiment_type": "fake_test_experiment"},