DevTools: remove hover effect from panel selector until migration to material look.

TBR=dgozman
NOTRY=true

Review URL: https://codereview.chromium.org/1220713003

git-svn-id: svn://svn.chromium.org/blink/trunk@197979 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/devtools/front_end/components/inspectorViewTabbedPane.css

@@ -10,10 +10,6 @@
     overflow: visible;
 }
 
-.tabbed-pane-header-tab:hover {
-    background-color: rgba(105, 105, 105, 0.1) !important;
-}
-
 .tabbed-pane-header-tab,
 .tabbed-pane-header-tab.selected {
     height: 26px;