Remove assertvarnish from package as it breaks on 0.6

Author: 3rd-Eden

package.json

@@ -23,7 +23,6 @@
   , "devDependencies": {
         "expresso": "0.9.2"
       , "should": "0.0.4"
-      , "assertvanish": "0.0.3-1"
       , "benchmark": "0.2.2"
       , "microtime": "0.1.3-1"
       , "colors": "0.5.1"