Removed unused package.

Author: neogeek

package.json

@@ -12,7 +12,6 @@
     "handlebars": "4.0.4",
     "highlight.js": "8.9.1",
     "markdown-it": "5.0.1",
-    "promise": "7.0.4",
     "q": "1.4.1",
     "sqlite3": "3.1.1",
     "temp": "0.8.3"