Remove unused implementations.

src/constants/languageItems.ts

@@ -1,6 +0,0 @@
-import { LanguageItem } from '../types/languageItem';
-
-export const languageItems: LanguageItem[] = [
-    { label: "Suomi", value: "fi" },
-    { label: "Englanti", value: "en" }
-];

src/types/languageItem.ts

@@ -1,4 +0,0 @@
-export type LanguageItem = {
-    label: string;
-    value: string;
-}