remove unused var and import required libs

suchwow/app.py

@@ -77,7 +77,6 @@ def reddit_recent():
 @app.cli.command("reddit_random")
 def reddit_random():
     # run every 8 hours
-    wallet = wownero.Wallet()
     all_posts = Post.select().where(Post.reddit_url == None)
     post = choice(all_posts)
     make_post(post)

suchwow/reddit.py

@@ -1,4 +1,5 @@
 import praw
+from flask import url_for
 from suchwow import config, wownero