removed devDependency

Author: einfallstoll

package.json

@@ -23,8 +23,7 @@
   },
   "homepage": "https://github.com/einfallstoll/express-ntlm",
   "devDependencies": {
-    "express": "^4.10.4",
-    "express-session": "^1.9.2"
+    "express": "^4.10.4"
   },
   "dependencies": {
     "async": "^0.9.0",