Remove dead code in SVGUseElement::CreateLayoutObject

Since we return false for 'display: contents' in the relevant
LayoutObjectIsNeeded() override, we shouldn't need to check for it again
here.

Bug: 997176
Change-Id: I589ea2291aa2ef31a6ea68d5e8a882251f587ec4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1768459Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Fredrik Söderquist <fs@opera.com>
Cr-Commit-Position: refs/heads/master@{#690311}

third_party/blink/renderer/core/svg/svg_use_element.cc

@@ -486,8 +486,6 @@ void SVGUseElement::DetachShadowTree() {
 
 LayoutObject* SVGUseElement::CreateLayoutObject(const ComputedStyle& style,
                                                 LegacyLayout) {
-  if (style.Display() == EDisplay::kContents)
-    return nullptr;
   return new LayoutSVGTransformableContainer(this);
 }