remove unneeded material

lib/widgets/editor/editor_toolbar.dart

@@ -66,8 +66,7 @@ class EditorToolbar extends HookWidget {
               ? Container(
                   height: _height,
                   width: double.infinity,
-                  color: Theme.of(context).cardColor,
-                  child: Material(
+                  color: Theme.of(context).canvasColor,
                   child: SingleChildScrollView(
                     scrollDirection: Axis.horizontal,
                     child: _ToolbarBody(
@@ -75,7 +74,6 @@ class EditorToolbar extends HookWidget {
                       instanceHost: instanceHost,
                     ),
                   ),
-                  ),
                 )
               : const SizedBox.shrink(),
         ),