fix(curriculum): Remove videoUrl using old image srcs (#43631)

* fix: replace responsive web dev bitly links

* Revert "fix: replace responsive web dev bitly links"

This reverts commit 3d2bcbef4b.

* fix: remove video url from html challenges using old image srcs

curriculum/challenges/english/01-responsive-web-design/basic-css/size-your-images.md

@@ -2,7 +2,6 @@
 id: bad87fee1348bd9acdf08812
 title: Size Your Images
 challengeType: 0
-videoUrl: 'https://scrimba.com/c/cM9MmCP'
 forumTopicId: 18282
 dashedName: size-your-images
 ---

curriculum/challenges/english/01-responsive-web-design/basic-html-and-html5/add-images-to-your-website.md

@@ -2,7 +2,6 @@
 id: bad87fee1348bd9aedf08812
 title: Add Images to Your Website
 challengeType: 0
-videoUrl: 'https://scrimba.com/p/pVMPUv/c8EbJf2'
 forumTopicId: 16640
 dashedName: add-images-to-your-website
 ---