minor cleanup

src/components/FileBrowserElement.tsx

@@ -1,12 +1,11 @@
 import React from "react"
-import PropTypes from "prop-types"
 import { Directory, File } from "../generated/graphql"
 import DirectoryComponent from "./DirectoryElement"
 import FileElement from "./FileElement"
 
 interface Props {
-    file?: File | null
-    dir?: Directory | null
+    file?: File
+    dir?: Directory
     onClick?: (event: React.MouseEvent ,data: File | Directory) => void
 	onContextMenu?: (e:React.MouseEvent) => void
 }
@@ -31,10 +30,4 @@ const FileBrowserElement: React.FC<Props> = (props) => {
 	)
 }
 
-FileBrowserElement.propTypes = {
-	dir: PropTypes.any,
-	file: PropTypes.any,
-	onClick: PropTypes.func
-}
-
-export default FileBrowserElement
+export default FileBrowserElement