chore: remove useless comments

content/4-component-composition/5-context/marko/App.marko

@@ -1,4 +1,4 @@
-<let/user = { // In a real app, you would fetch the user data from an API
+<let/user = {
   id: 1,
   username: "unicorn42",
   email: "unicorn42@example.com",

content/4-component-composition/5-context/mithril/App.js

@@ -2,7 +2,6 @@ import m from "mithril";
 import UserProfile from "./UserProfile";
 
 export default function App() {
-  // In a real app, you would fetch the user data from an API
   const user = {
     id: 1,
     username: "unicorn42",

content/4-component-composition/5-context/react/App.jsx

@@ -3,7 +3,6 @@ import UserProfile from "./UserProfile";
 import { UserContext } from "./UserContext";
 
 export default function App() {
-  // In a real app, you would fetch the user data from an API
   const [user, setUser] = useState({
     id: 1,
     username: "unicorn42",

content/4-component-composition/5-context/solid/App.jsx

@@ -4,7 +4,6 @@ import { UserContext } from "./UserContext";
 import UserProfile from "./UserProfile";
 
 export default function App() {
-  // In a real app, you would fetch the user data from an API
   const [user, setUser] = createSignal({
     id: 1,
     username: "unicorn42",

content/4-component-composition/5-context/svelte4/App.svelte

@@ -3,7 +3,6 @@
   import UserProfile from "./UserProfile.svelte";
   import createUserStore from "./createUserStore.js";
 
-  // In a real app, you would fetch the user data from an API
   const userStore = createUserStore({
     id: 1,
     username: "unicorn42",

content/4-component-composition/5-context/svelte5/App.svelte

@@ -3,7 +3,6 @@
   import UserProfile from "./UserProfile.svelte";
   import createUserState from "./createUserState.svelte.js";
 
-  // In a real app, you would fetch the user data from an API
   const user = createUserState({
     id: 1,
     username: "unicorn42",