Remove 'native data' and 'native units' (#331)

Resolves #331 (closed)

Somehow resolves #850 (closed)

Base/Util/ConversionUtil.h

@@ -23,7 +23,6 @@ double qz2lambda(double alpha, double qz);
 
 double qz(double alpha, double lambda);
 
-
 } // namespace Convert::Refl
 
 #endif // BORNAGAIN_BASE_UTIL_CONVERSIONUTIL_H