Remove one debug.log.

Runtime/rendering/sliver_fill.cs

             }
 
             float paintedChildSize = this.calculatePaintOffset(this.constraints, from: 0.0f, to: extent);
-            Debug.Log("size" + paintedChildSize);
             D.assert(paintedChildSize.isFinite());
             D.assert(paintedChildSize >= 0.0);
             this.geometry = new SliverGeometry(