Remove the no-offset kernel; it is not useful and was a hack for a deadline.

src/mlpack/core/kernels/polynomial_kernel.hpp

@@ -68,33 +68,6 @@ class PolynomialKernel
   double degree;
 };
 
-// For an integer degree known at compile time.  No offset.
-template<int degree>
-class PolynomialNoOffsetKernel
-{
- public:
-  PolynomialNoOffsetKernel();
-
-  template<typename VecType>
-  static double Evaluate(const VecType& a, const VecType& b)
-  {
-    return pow((arma::dot(a, b)), degree);
-  }
-};
-
-template<int denominator>
-class PolynomialFractionKernel
-{
- public:
-  PolynomialFractionKernel();
-
-  template<typename VecType>
-  static double Evaluate(const VecType& a, const VecType& b)
-  {
-    return pow((arma::dot(a, b)), 1.0 / (double) denominator);
-  }
-};
-
 }; // namespace kernel
 }; // namespace mlpack