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.

bot/config.py

@@ -13,7 +13,6 @@ class Config:
     db_path: str
     log_level: str
     manual_guild_ids: List[int] = field(default_factory=list)
-    verify_reactions: bool = True
 
 
 def load_config(path: str = "config.json") -> Config:
@@ -38,5 +37,4 @@ def load_config(path: str = "config.json") -> Config:
         db_path=data.get("db_path", "reactions.sqlite3"),
         log_level=data.get("log_level", "INFO"),
         manual_guild_ids=[int(g) for g in data.get("manual_guild_ids", [])],
-        verify_reactions=bool(data.get("verify_reactions", True)),
     )