Removed calls to Navigation.bind() and Calculator.bind()

that were causing phantomjs interpreter to fail
with undefined method error.

lms/static/coffee/spec/calculator_spec.coffee

@@ -4,9 +4,6 @@ describe 'Calculator', ->
     @calculator = new Calculator
 
   describe 'bind', ->
-    beforeEach ->
-      Calculator.bind()
-
     it 'bind the calculator button', ->
       expect($('.calc')).toHandleWith 'click', @calculator.toggle
 

lms/static/coffee/spec/navigation_spec.coffee

@@ -32,11 +32,9 @@ describe 'Navigation', ->
             heightStyle: 'content'
 
       it 'binds the accordionchange event', ->
-        Navigation.bind()
         expect($('#accordion')).toHandleWith 'accordionchange', @navigation.log
 
       it 'bind the navigation toggle', ->
-        Navigation.bind()
         expect($('#open_close_accordion a')).toHandleWith 'click', @navigation.toggle
 
     describe 'when the #accordion does not exists', ->
@@ -45,7 +43,6 @@ describe 'Navigation', ->
 
       it 'does not activate the accordion', ->
         spyOn $.fn, 'accordion'
-        Navigation.bind()
         expect($('#accordion').accordion).wasNotCalled()
 
   describe 'toggle', ->