removes redundant definition note

Former-commit-id: c8f5e734a4
Former-commit-id: 188bff4120

node/src/documents/introduction/definitions.html

@@ -28,12 +28,6 @@ type   : 'UI Introduction'
 
   <p>Definitions in semantic are groups of css, fonts, images, and javascript which make up a single element. Unlike other javascript libraries, semantic UI elements are stand-alone and only require their own assets to function correctly.</p>
 
-  <h2 class="ui dividing header">Namespacing</h2>
-
-  <p><b>CSS Definitions avoid conflicts with other elements by descending rules from a common <code>ui</code> namespace.</b> Any element on a page that has the class ui matches up to a UI definition. Elements without the class <code>ui</code> are a part of a UI definition. The UI namespace allows for individual class names to not alter other element's design, as they are defined only to modify specific nouns.</p>
-
-  <p>UI namespaces should use a single word class name that represents its function descriptively on a web site. For example, a button will be namespaced in html using the class name "ui button".</p>
-
   <h2 class="ui header">Definition Types</h2>
   <p>Semantic has five different ui definitions. These are useful patterns for describing re-usable parts of a website.</p>
   <table class="ui celled table segment">