fixed compile warnings and removed extra whitespaces

modules/imgproc/src/demosaicing.cpp

@@ -223,7 +223,7 @@ public:
         return (int)(bayer - (bayer_end - width));
     }
 
-    int bayer2RGBA(const uchar* bayer, int bayer_step, uchar* dst, int width, int blue) const
+    int bayer2RGBA(const uchar*, int, uchar*, int, int) const
     {
         return 0;
     }
@@ -496,7 +496,7 @@ public:
         return (int)(bayer - (bayer_end - width));
     }
 
-    int bayer2RGB_EA(const uchar* bayer, int bayer_step, uchar* dst, int width, int blue) const
+    int bayer2RGB_EA(const uchar*, int, uchar*, int, int) const
     {
         return 0;
     }