cornerRadius can be negative. Remove comment reminding me to verify t…

…hat is the case.

Reviewers: featherless, #mux

Reviewed By: featherless, #mux

Projects: #mux, #material_components_ios, #material_shadows

Differential Revision: http://mux-oss-phabricator.appspot.com/D32

ShadowLayer/src/MDCShadowLayer.m

@@ -142,9 +142,6 @@ - (void)renderInContext:(CGContextRef)ctx {
 /** Returns a shadowPath based on the layer properties. */
 - (UIBezierPath *)defaultShadowPath {
   CGFloat cornerRadius = self.cornerRadius;
-  // TODO(iangordon): Verify corner radius *can* be negative, even if that has no visual effect. If
-  // not, we can return this to this original if (0.0 != cornerRadius) and suppress the associated
-  // warning.
   if (0.0 < cornerRadius) {
     return [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:cornerRadius];
   }