remove unnecessary style

apps/app/src/components/Page/CopyDropdown.jsx

@@ -120,7 +120,6 @@ const CopyDropdown = (props) => {
 
         <DropdownMenu
           strategy="fixed"
-          style={{ zIndex: 1016 }} /* zIndex: 1016 // larger than z-index value of grw-subnav-fixed-container in GrowiSubNavigationSwitcher.module.scss */
         >
           <div className="d-flex align-items-center justify-content-between">
             <DropdownItem header className="px-3">