remove link

docs/modules/ROOT/pages/sdk/plugin/shaderblow.adoc

@@ -121,7 +121,7 @@ link:https://hub.jmonkeyengine.org/t/solved-grayscale-filter/23656[Forum thread]
 
 == Old Film Effect Filter
 
-Old Film filter simulate the effect of a classic looking film effect. It's a port of this link:http://devmaster.net/posts/2989/shader-effects-old-film[shader effect].
+Old Film filter simulate the effect of a classic looking film effect. 
 
 Features: