fix: removing contents from color intro page as its short and not needed

Author: georgewrmarshall

docs/IntroductionColor.stories.mdx

@@ -19,12 +19,6 @@ Color is used to express style and communicate meaning. We follow a 3 tiered sys
   <img width="80%" src={designTokenDiagramImage} />
 </div>
 
-- [**Brand colors**](#brand-colors-first-tier)
-- [**Theme colors**](#theme-colors-second-tier)
-- [**Component colors**](#component-colors-third-tier)
-- [**Next steps**](#next-steps)
-- [**References**](#references)
-
 <br />
 
 ## Brand colors (first tier)