Remove the use of BOT_PASSWORD

Author: OrkoHunter

app.json

@@ -13,9 +13,6 @@
     "BOT_USERNAME": {
         "description": "GitHub username of your pep8speaks bot"
     },
-    "BOT_PASSWORD": {
-        "description": "GitHub password of your pep8speaks bot"
-    },
     "GITHUB_PAYLOAD_SECRET": {
         "description": "Use the same secret key for configuring payloads in your repository's settings. This is to ensure that the app responds only to payloads sent by your repositories."
     },