Removing Target (#124)

Co-authored-by: Jun Doi <doichan@jp.ibm.com>

Author: Krishn1412

src/circuit/quantumcircuit_def.hpp

@@ -62,7 +62,6 @@ class QuantumCircuit
 	std::vector<ClassicalRegister> cregs_; // classical registers
 
 	std::shared_ptr<rust_circuit> rust_circuit_ = nullptr; // shared pointer to the circuit for Rust
-	std::shared_ptr<transpiler::Target> target_ = nullptr; // shared pointer to the target object
 
 	std::shared_ptr<ControlFlowOp> pending_control_flow_op_ = nullptr; // shared pointer to control flow object
 
@@ -157,12 +156,7 @@ class QuantumCircuit
 	/// @param circ smart pointer to RUst circuit
 	/// @param map layout mapping
 	void set_qiskit_circuit(std::shared_ptr<rust_circuit> circ, const std::vector<uint32_t> &map);
-
-	/// @brief set target to this circuit
-	/// @param target smart pointer to target
-	/// @details target is set for transpiled circuit
-	void set_target(std::shared_ptr<transpiler::Target> target);
-
+	
 	/// @brief get qubit mapping
 	/// @return qubit mapping
 	const reg_t &get_qubit_map(void)

src/circuit/quantumcircuit_impl.hpp

@@ -133,7 +133,6 @@ QuantumCircuit::QuantumCircuit(const QuantumCircuit &circ)
     cregs_ = circ.cregs_;
 
     rust_circuit_ = circ.rust_circuit_;
-    target_ = circ.target_;
 
     measure_map_ = circ.measure_map_;
     qubit_map_ = circ.qubit_map_;
@@ -151,8 +150,6 @@ QuantumCircuit QuantumCircuit::copy(void)
     copied.qregs_ = qregs_;
     copied.cregs_ = cregs_;
 
-    copied.target_ = target_;
-
     copied.measure_map_ = measure_map_;
     copied.qubit_map_ = qubit_map_;
     return copied;
@@ -199,15 +196,6 @@ QuantumCircuit::~QuantumCircuit()
     {
         rust_circuit_.reset();
     }
-    if (target_)
-    {
-        target_.reset();
-    }
-}
-
-void QuantumCircuit::set_target(std::shared_ptr<transpiler::Target> target)
-{
-    target_ = target;
 }
 
 void QuantumCircuit::get_qubits(reg_t &bits)

src/compiler/transpiler.hpp

@@ -61,7 +61,6 @@ circuit::QuantumCircuit transpile(circuit::QuantumCircuit &circ, providers::Back
 
     circuit::QuantumCircuit transpiled = circ;
     transpiled.set_qiskit_circuit(std::shared_ptr<rust_circuit>(result.circuit, qk_circuit_free), layout_map);
-    transpiled.set_target(target);
 
     qk_transpile_layout_free(result.layout);
     target.reset();