webkitImageSmoothingEnabled is deprecated

[angelskieglazki]

[viki53]

They all seem to have become deprecated or unnecessary: https://caniuse.com/mdn-api_canvasrenderingcontext2d_imagesmoothingenabled
Except maybe ms for IE11 (which is over 10 years old now)

No need to comment though (commented code is dead code), only one line can remain in this function:

    Q.ctx.imageSmoothingEnabled = enabled;