MD Downloads: drop :hover effect because it looks like a lot like :focus

chrome/browser/resources/md_downloads/toolbar.css

Index: chrome/browser/resources/md_downloads/toolbar.css
diff --git a/chrome/browser/resources/md_downloads/toolbar.css b/chrome/browser/resources/md_downloads/toolbar.css
index bb27d9fbc5045e8219a422a3040738d3fe09c35b..de3d76bc7b315a7e280200c2d38d0d0ef6c2e204 100644
--- a/chrome/browser/resources/md_downloads/toolbar.css
+++ b/chrome/browser/resources/md_downloads/toolbar.css
@@ -90,10 +90,6 @@ paper-item {
   min-height: 40px;
 }
 
-paper-item:hover {
-  background: #eaeaea;  /* TODO(dbeam): real color? */
-}
-
 @media not all and (max-width: 1024px) {
   /* Hide vertical dot menu when there's enough room for #actions. */
   paper-menu-button {