simplify

Sim/Simulation/DepthprobeSimulation.cpp

@@ -91,7 +91,6 @@ public:
     {
     }
 
-    double wavelength() const { return m_wavelength; }
     double alphaI() const { return m_alpha_i; }
     R3 getKi() const { return vecOfLambdaAlphaPhi(m_wavelength, m_alpha_i); }