BFieldZone rm unused method

MagneticField/MagFieldElements/MagFieldElements/BFieldZone.h

@@ -36,9 +36,6 @@ public:
   void addBiotSavart(const double* ATH_RESTRICT xyz,
                      double* ATH_RESTRICT B,
                      double* ATH_RESTRICT deriv = nullptr) const;
-  // scale B field by a multiplicative factor: RDS 2019/09 - no longer used.
-  // Scaling is done in cachec
-  void scaleField(double factor);
   // accessors
   int id() const;
   unsigned ncond() const;

MagneticField/MagFieldElements/MagFieldElements/BFieldZone.icc

@@ -20,14 +20,6 @@ BFieldZone::appendCond(const BFieldCond& cond)
   m_cond.push_back(cond);
 }
 
-inline void
-BFieldZone::scaleField(double factor)
-{
-  scaleBscale(factor);
-  for (unsigned i = 0; i < ncond(); i++) {
-    m_cond[i].scaleCurrent(factor);
-  }
-}
 
 inline void
 BFieldZone::addBiotSavart(const double* ATH_RESTRICT xyz,