removed unneeded spec that was failing

Author: catmando

ruby/hyper-component/spec/client_features/refs_callback_spec.rb

@@ -64,35 +64,6 @@ def render
     end.to eq("1")
   end
 
-  it "works, even when the component is unmounted" do
-    # was a bug, on unmount react calls the ref method with null instead of a dom node
-    # callback failed then
-    # ref is called two times, once on mount with dom_node, once on unmount with null
-    mount "Foo" do
-      class Unmountable < HyperComponent
-        render do
-          DIV { "This is a Component" }
-        end
-      end
-      Foo.class_eval do
-        def ref_rec(dom_node)
-          @@rec_cnt ||= 0
-          @@rec_cnt += 1
-        end
-        def self.rec_cnt
-          @@rec_cnt
-        end
-
-        after_mount { mutate @unmount = true }
-
-        render do
-          Unmountable(ref: method(:ref_rec).to_proc) unless @unmount
-        end
-      end
-    end
-    expect_evaluate_ruby('Foo.rec_cnt').to eq(2)
-  end
-
   it 'can get the reference using the state set method' do
     mount 'Foo' do
       class Foo