Remove unused methods from token.

The refactoring of Editor.buildLineHtml removed the need for these methods

src/app/token.coffee

@@ -32,15 +32,3 @@ class Token
 
   buildTabToken: (tabText) ->
     new Token(value: tabText, scopes: @scopes, bufferDelta: 1, isAtomic: true)
-
-  getCssClassString: ->
-    @cssClassString ?= @getCssClasses().join(' ')
-
-  getCssClasses: ->
-    classes = []
-    for scope in @scopes
-      scopeComponents = scope.split('.')
-      for i in [0...scopeComponents.length]
-        classes.push scopeComponents[0..i].join('-')
-    classes
-