Remove post-reaction verification refetch

Was doing an extra fetch_message per reaction to confirm the
reaction stuck. Turned out to be unrelated to the earlier
missing-reactions bug (that was the scan-state resume issue), so
drop it to save the API calls.

main.py

@@ -72,7 +72,7 @@ class ReactorClient(discord.Client):
         async def react_fn(message: discord.Message, target: Target) -> bool:
             return await react_to_message(
                 self.storage, message, target, self.cfg.friend_id, self.cfg.emoji,
-                source="backlog", display=self.display, verify=self.cfg.verify_reactions,
+                source="backlog", display=self.display,
             )
 
         for target in targets:
@@ -100,7 +100,7 @@ class ReactorClient(discord.Client):
             return
         await react_to_message(
             self.storage, message, target, self.cfg.friend_id, self.cfg.emoji,
-            source="live", display=self.display, verify=self.cfg.verify_reactions,
+            source="live", display=self.display,
         )