remove unused code

Author: LaurentBerger

modules/ximgproc/src/quaternion.cpp

@@ -41,33 +41,13 @@ void qunitary(InputArray _img, OutputArray _qimg)
 {
     int type = _img.type(), depth = CV_MAT_DEPTH(type), cn = CV_MAT_CN(type);
     CV_Assert((depth == CV_64F) && _img.dims() == 2 && cn == 4);
-    vector<Mat> qplane(4), plane;
-    split(_img, plane);
     _img.copyTo(_qimg);
     Mat qimg = _qimg.getMat();
     qimg.forEach<Vec4d>([](Vec4d &p, const int * /*position*/) -> void {
         double d = p[0] * p[0] + p[1] * p[1] + p[2] * p[2] + p[3] * p[3];
         d = 1 / sqrt(d);
         p *= d;
     });
-    /*
-    qplane[0] = plane[0].clone();
-    qplane[1] = plane[1].clone();
-    qplane[2] = plane[2].clone();
-    qplane[3] = plane[3].clone();
-    double *ptr0 = qplane[0].ptr<double>(0, 0), *ptr1 = qplane[1].ptr<double>(0, 0);
-    double *ptr2 = qplane[2].ptr<double>(0, 0), *ptr3 = qplane[3].ptr<double>(0, 0);
-    int nb = plane[0].rows*plane[0].cols;
-    for (int i = 0; i < nb; i++, ptr0++, ptr1++, ptr2++, ptr3++)
-    {
-        double d = *ptr0 * *ptr0 + *ptr1 * *ptr1 + *ptr2 * *ptr2 + *ptr3 * *ptr3;
-        d = 1 / sqrt(d);
-        *ptr0 *= d;
-        *ptr1 *= d;
-        *ptr2 *= d;
-        *ptr3 *= d;
-    }
-    merge(qplane, _qimg);*/
 }
 
 void qdft(InputArray _img, OutputArray _qimg, int  	flags, bool sideLeft)