Update blenders.cpp

Removed passing try_gpu parameter to FeatherBlender constructor because it only has sharpness parameter.

modules/stitching/src/blenders.cpp

@@ -70,7 +70,7 @@ Ptr<Blender> Blender::createDefault(int type, bool try_gpu)
     if (type == NO)
         return makePtr<Blender>();
     if (type == FEATHER)
-        return makePtr<FeatherBlender>(try_gpu);
+        return makePtr<FeatherBlender>();
     if (type == MULTI_BAND)
         return makePtr<MultiBandBlender>(try_gpu);
     CV_Error(Error::StsBadArg, "unsupported blending method");