Replace .to<double>() and .template to<double>() with .value() (#3667)

It's a less verbose way to do the same thing.

wpilibc/src/main/native/cpp/simulation/DutyCycleEncoderSim.cpp

@@ -17,7 +17,7 @@ DutyCycleEncoderSim::DutyCycleEncoderSim(const frc::DutyCycleEncoder& encoder) {
 }
 
 void DutyCycleEncoderSim::Set(units::turn_t turns) {
-  m_simPosition.Set(turns.to<double>());
+  m_simPosition.Set(turns.value());
 }
 
 void DutyCycleEncoderSim::SetDistance(double distance) {