Remove the `CanvasGraphics.getCanvasPosition` method
Remove the `CanvasGraphics.getCanvasPosition` method

This old method, which is only used with the `imageLayer` functionality, is essentially just a re-implementation of the existing `Util.applyTransform` method.

Shoobx/pdf.js,showpad/mozilla-pdf.js,showpad/mozilla-pdf.js,Snuffleupagus/pdf.js,Snuffleupagus/pdf.js,showpad/mozilla-pdf.js,mozilla/pdf.js,Shoobx/pdf.js,mozilla/pdf.js,Shoobx/pdf.js,mozilla/pdf.js,timvandermeij/pdf.js,timvandermeij/pdf.js,timvandermeij/pdf.js,Snuffleupagus/pdf.js