fix(curriculum): remove duplicate --before-all-- sections (freeCodeCamp#60410)

Co-authored-by: Huyen Nguyen <25715018+huyenltnguyen@users.noreply.github.com>
Co-authored-by: Krzysztof G. <60067306+gikf@users.noreply.github.com>

Author: 3 people

curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da803d9892447d059804e.md

@@ -15,12 +15,6 @@ Now create an image tag and give it the `class` `"user-img"`. Use string interpo
 window.fetch = () => Promise.resolve({json: () => Promise.resolve([{ author: 'Whoever', image: 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==', url: "http://not-a-real-url.nowhere/", bio: 'words go here' }])});
 ```    
 
-# --before-all--
-
-```js
-window.fetch = () => Promise.resolve({json: () => Promise.resolve([{ author: 'Whoever', image: 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==', url: "http://not-a-real-url.nowhere/", bio: 'words go here' }])});
-```
-
 # --hints--
 
 You should create an `img` element.

curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da836581c254815f785fe.md

@@ -17,12 +17,6 @@ Add a paragraph element with the `class` `"bio"`, then interpolate `bio` inside
 window.fetch = () => Promise.resolve({json: () => Promise.resolve([{ author: 'Whoever', image: 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==', url: "http://not-a-real-url.nowhere/", bio: 'words go here' }])});
 ```
 
-# --before-all--
-
-```js
-window.fetch = () => Promise.resolve({json: () => Promise.resolve([{ author: 'Whoever', image: 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==', url: "http://not-a-real-url.nowhere/", bio: 'words go here' }])});
-```
-
 # --hints--
 
 You should create a `p` element.

curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641da86294fd9f485d3c2bf0.md

@@ -17,12 +17,6 @@ Add an anchor element with the `class` `"author-link"`, interpolate `url` as the
 window.fetch = () => Promise.resolve({json: () => Promise.resolve([{ author: 'Whoever', image: 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==', url: "http://not-a-real-url.nowhere/", bio: 'words go here' }])});
 ```
 
-# --before-all--
-
-```js
-window.fetch = () => Promise.resolve({json: () => Promise.resolve([{ author: 'Whoever', image: 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==', url: "http://not-a-real-url.nowhere/", bio: 'words go here' }])});
-```
-
 # --hints--
 
 You should create an anchor element.

curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-fetch-and-promises-by-building-an-fcc-authors-page/641daa8c2c3e364ac3650b37.md

@@ -17,12 +17,6 @@ Add a `div` element above the author's bio and give it the `class` `"purple-divi
 window.fetch = () => Promise.resolve({json: () => Promise.resolve([{ author: 'Whoever', image: 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==', url: "http://not-a-real-url.nowhere/", bio: 'words go here' }])});
 ```
 
-# --before-all--
-
-```js
-window.fetch = () => Promise.resolve({json: () => Promise.resolve([{ author: 'Whoever', image: 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==', url: "http://not-a-real-url.nowhere/", bio: 'words go here' }])});
-```
-
 # --hints--
 
 You should create a `div` element before your `p` element.