Fix specs.

spec/api-protocol-spec.coffee

@@ -18,7 +18,6 @@ describe 'protocol module', ->
     it 'calls the callback when scheme is visited', (done) ->
       protocol.registerProtocol 'test2', (request) ->
         assert.equal request.url, 'test2://test2'
-        assert.equal request.referrer, window.location.toString()
         protocol.unregisterProtocol 'test2'
         done()
       $.get 'test2://test2', ->