Remove unused methods from token.

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

spec/app/token-spec.coffee

@@ -13,8 +13,4 @@ describe "Token", ->
     token = _.last(screenLine.tokens)
 
   afterEach ->
-    editSession.destroy()
-
-  describe ".getCssClassString()", ->
-    it "returns a class for every scope prefix, replacing . characters in scope names with --", ->
-      expect(token.getCssClassString()).toBe 'source source-js punctuation punctuation-terminator punctuation-terminator-statement punctuation-terminator-statement-js'
+    editSession.destroy()

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
-