In #12824, PrimitiveV1 implementations (not the base classes) was deprecated. Time to remove them in 2.0.

• qiskit/primitives/backend_estimator.py:112 (__init__)
• qiskit/primitives/utils.py:31 (init_circuit)
• qiskit/primitives/utils.py:54 (init_observable)
• qiskit/primitives/utils.py:81 (final_measurement_mapping)
• qiskit/primitives/backend_sampler.py:52 (__init__)
• qiskit/primitives/estimator.py:62 (__init__)
• qiskit/primitives/sampler.py:56 (__init__)
• qiskit/primitives/base/base_estimator.py:199 (__init__)
• qiskit/primitives/base/base_sampler.py:162 (__init__)