Revert "canvas: resetCtxToDefault should also reset the transform matrix."

This reverts commit 434aa4b.

Author: emilio

src/display/canvas.js

@@ -756,7 +756,6 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
     ctx.miterLimit = 10;
     ctx.globalCompositeOperation = "source-over";
     ctx.font = "10px sans-serif";
-    ctx.setTransform(1, 0, 0, 1, 0, 0);
     if (ctx.setLineDash !== undefined) {
       ctx.setLineDash([]);
       ctx.lineDashOffset = 0;