The canvas texture is part of your painting. To eliminate that, choose a smoothe substrate like a wood panel.

If the original canvas is fully covered with paint and the weave is not visible the problem of making a giclee print on canvas disappears. Light shining at an angle of the original painting will show this texture. A professional photographer can help you to adjust the light so that the effect becomes muted. However, if the canvas weave is primed but not fully covered with paint, or with a thin layer of paint, he will always photograph the weave of the canvas and the high resolution will make it obvious once printed. In that case, doubling up canvas texture with canvas print is not a good idea. Of course, one can use the giclee print on canvas if the original is painted on paper.

I don’t think what you want is possible while maintaining the integrity of the image. Original paintings created on canvas are reproduced on canvas with excellent results when a master giclee printer handles the process. I suggest checking with a top atelier for the help you need.