fix(curriculum): remove SASS from requirements

curriculum/challenges/english/03-front-end-libraries/sass/apply-a-style-until-a-condition-is-met-with-while.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7dbf367417b2b2512bbb
 title: Apply a Style Until a Condition is Met with @while
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---
 

curriculum/challenges/english/03-front-end-libraries/sass/create-reusable-css-with-mixins.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7dbd367417b2b2512bb6
 title: Create Reusable CSS with Mixins
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---
 

curriculum/challenges/english/03-front-end-libraries/sass/extend-one-set-of-css-styles-to-another-element.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7fa5367417b2b2512bbd
 title: Extend One Set of CSS Styles to Another Element
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---
 

curriculum/challenges/english/03-front-end-libraries/sass/nest-css-with-sass.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7dbd367417b2b2512bb5
 title: Nest CSS with Sass
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---
 

curriculum/challenges/english/03-front-end-libraries/sass/split-your-styles-into-smaller-chunks-with-partials.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7dbf367417b2b2512bbc
 title: Split Your Styles into Smaller Chunks with Partials
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---
 

curriculum/challenges/english/03-front-end-libraries/sass/store-data-with-sass-variables.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7dbd367417b2b2512bb4
 title: Store Data with Sass Variables
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---
 

curriculum/challenges/english/03-front-end-libraries/sass/use-each-to-map-over-items-in-a-list.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7dbf367417b2b2512bba
 title: Use @each to Map Over Items in a List
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---
 
@@ -66,23 +63,21 @@ tests:
 
 </div>
 
-
-
 </section>
 
 ## Solution
 <section id='solution'>
-  
+
 The solution requires using the $color variable twice: once for the class name and once for setting the background color. You can use either the list or map data type.
 
 ### List Data type
-```js
+```html
 <style type='text/sass'>
-  
+
   @each $color in blue, black, red {
     .#{$color}-bg {background-color: $color;}
-  } 
-  
+  }
+
   div {
     height: 200px;
     width: 200px;
@@ -95,15 +90,15 @@ The solution requires using the $color variable twice: once for the class name a
 ```
 
 ### Map Data type
-```js
+```html
 <style type='text/sass'>
-  
+
   $colors: (color1: blue, color2: black, color3: red);
-   
+
   @each $key, $color in $colors {
     .#{$color}-bg {background-color: $color;}
-  } 
-  
+  }
+
   div {
     height: 200px;
     width: 200px;
@@ -113,7 +108,6 @@ The solution requires using the $color variable twice: once for the class name a
 <div class="blue-bg"></div>
 <div class="black-bg"></div>
 <div class="red-bg"></div>
-```  
-  
-  
+```
+
 </section>

curriculum/challenges/english/03-front-end-libraries/sass/use-for-to-create-a-sass-loop.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7dbe367417b2b2512bb9
 title: Use @for to Create a Sass Loop
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---
 

curriculum/challenges/english/03-front-end-libraries/sass/use-if-and-else-to-add-logic-to-your-styles.english.md

@@ -1,9 +1,6 @@
 ---
 id: 587d7dbe367417b2b2512bb8
 title: Use @if and @else to Add Logic To Your Styles
-required:
-  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
-    raw: true
 challengeType: 0
 ---