Remove retired VQE runner (#313)

* pre release version bump * remove VQE runner now that it's retired * change test to not fail with qiskit 0.43; put back requirement --------- Co-authored-by: lillian542 <[email protected]>
PennyLaneAI · Jun 22, 2023 · 577dc2f · 577dc2f
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,6 +5,11 @@
 * Added a `RemoteDevice` (PennyLane device name: `qiskit.remote`) that accepts a backend
   instance directly. [(#304)](https://github.com/PennyLaneAI/pennylane-qiskit/pull/304)
 
+### Breaking changes
+
+* The `vqe_runner` has been removed, as the Qiskit Runtime VQE program has been retired.
+  [(#313)](https://github.com/PennyLaneAI/pennylane-qiskit/pull/313)
+
 ### Bug fixes
 
 * The list of supported gates is replaced with `pennylane.ops._qubit__ops__` so that the `CZ` gate is included.
@@ -14,6 +19,7 @@
 
 This release contains contributions from (in alphabetical order):
 
+Matthew Silverman,
 Frederik Wilde,
 Etienne Wodey (Alpine Quantum Technologies GmbH)
 

diff --git a/doc/devices/runtime.rst b/doc/devices/runtime.rst
@@ -18,35 +18,4 @@ You can use the ``circuit_runner`` and ``sampler`` devices by using their short
 
     dev = qml.device('qiskit.ibmq.sampler', wires=2, backend='ibmq_qasm_simulator', shots=8000, **kwargs)
 
-
-Custom Runtime Programs
-~~~~~~~~~~~~~~~~~~~~~~~
-
-Not all Qiskit runtime programs correspond to complete devices, some solve specific problems (VQE, QAOA, etc...).
-We created a wrapper to use PennyLane objects while solving VQE problems on IBM backends.
-
-.. code-block:: python
-
-    from pennylane_qiskit import vqe_runner
-
-    def vqe_circuit(params):
-        qml.RX(params[0], wires=0)
-        qml.RY(params[1], wires=0)
-
-    coeffs = [1, 1]
-    obs = [qml.PauliX(0), qml.PauliZ(0)]
-    hamiltonian = qml.Hamiltonian(coeffs, obs)
-    shots = 8000
-
-    job = vqe_runner(
-        backend="ibmq_qasm_simulator",
-        hamiltonian=hamiltonian,
-        ansatz=vqe_circuit,
-        x0=[3.97507603, 3.00854038],
-        shots=shots,
-        optimizer="SPSA",
-        optimizer_config={"maxiter": 40},
-        kwargs={"hub": "ibm-q", "group": "open", "project": "main"},
-    )
-
 More details on Qiskit runtime programs in the `IBMQ runtime documentation <https://qiskit.org/documentation/partners/qiskit_ibm_runtime/index.html>`_.
diff --git a/pennylane_qiskit/__init__.py b/pennylane_qiskit/__init__.py
@@ -21,4 +21,3 @@
 from .converter import load, load_qasm, load_qasm_from_file
 from .runtime_devices import IBMQCircuitRunnerDevice
 from .runtime_devices import IBMQSamplerDevice
-from .vqe_runtime_runner import vqe_runner