remove unsupported erf(c)inv related host functionality

Change-Id: I665c33616359a0124b5552076359d2f8faa54930

src/math_functions.cpp

@@ -820,16 +820,6 @@ __host__ float modff(float x, float *iptr)
     return std::modf(x, iptr);
 }
 
-__host__ float erfcinvf(float y)
-{
-    return __hip_host_erfcinvf(y);
-}
-
-__host__ double erfcinv(double y)
-{
-    return __hip_host_erfcinv(y);
-}
-
 __host__ double fdivide(double x, double y)
 {
     return x/y;
@@ -937,16 +927,6 @@ __host__ void sincospi(double x, double *sptr, double *cptr)
     *cptr = std::cos(HIP_PI*x);
 }
 
-//__host__ float normcdfinvf(float x)
-//{
-//    return std::sqrt(2) * erfinvf(2*x-1);
-//}
-
-//__host__ double normcdfinv(double x)
-//{
-//    return std::sqrt(2) * erfinv(2*x-1);
-//}
-
 __host__ float nextafterf(float x, float y)
 {
     return std::nextafter(x, y);