How to remove render blocking of webresources.axd

Question

Hey Guys i want to improve my page speed how can i eliminate render blocking of webresources.axd

 

How can i dot that I have a code but its not working code is 

 

<httpModules>
<add type="ScriptCompressorModule" name="ScriptCompressorModule" />
</httpModules>
<httpHandlers>
<add verb="*" path="*js.axd" type="ScriptCompressorHandler" />
</httpHandlers>