Remove spurious state attribute (#937)

* Remove spurious state attribute

As far as I can see, this attribute is no longer used?

* Update pathological.json

* Update test/pathological.json

lib/rules_block/state_block.js

@@ -54,9 +54,6 @@ function StateBlock(src, md, env, tokens) {
 
   this.level = 0;
 
-  // renderer
-  this.result = '';
-
   // Create caches
   // Generate markers.
   s = this.src;