[Devtools] Fixed dark theme scrollbars consistency in settings

third_party/WebKit/Source/devtools/front_end/settings/settingsScreen.css

Index: third_party/WebKit/Source/devtools/front_end/settings/settingsScreen.css
diff --git a/third_party/WebKit/Source/devtools/front_end/settings/settingsScreen.css b/third_party/WebKit/Source/devtools/front_end/settings/settingsScreen.css
index 8da02f5f0bac2d8a7af4f8202aa4102a2c9461ed..1d041e438c64f8e26b428cd6e72df50064f91e85 100644
--- a/third_party/WebKit/Source/devtools/front_end/settings/settingsScreen.css
+++ b/third_party/WebKit/Source/devtools/front_end/settings/settingsScreen.css
@@ -31,31 +31,6 @@
     padding: 12px;
 }
 
-.help-window-main .help-container-wrapper::-webkit-scrollbar {
-    width: 11px;
-}
-
-.help-window-main .help-container-wrapper::-webkit-scrollbar-corner,
-.help-window-main .help-container-wrapper::-webkit-resizer {
-    display: none;
-}
-
-.help-window-main .help-container-wrapper::-webkit-scrollbar-thumb:vertical {
-    background: linear-gradient(to right, rgb(128, 128, 128), rgb(96, 96, 96) 40%, rgb(128, 128, 128));
-    border-radius: 5px;
-    min-height: 20px;
-}
-
-.help-window-main .help-container-wrapper::-webkit-scrollbar-thumb:vertical:hover,
-.help-window-main .help-container-wrapper::-webkit-scrollbar-thumb:vertical:active {
-    background: linear-gradient(to right, rgb(176, 176, 176), rgb(144, 144, 144) 40%, rgb(176, 176, 176));
-}
-
-.help-window-main .help-container-wrapper::-webkit-scrollbar-track:vertical {
-    background: linear-gradient(to right, rgb(10, 10, 10), rgb(32, 32, 32) 25%, rgb(32, 32, 32));
-    border-radius: 5px;
-}
-
 .help-container {
     width: 100%;
     -webkit-user-select: auto;