bot: make mypy happy with the plugins folder (meh)

edmond/bot.py

@@ -133,7 +133,10 @@ class Bot(irc.client.SimpleIRCClient, Logger):
         plugin_files = os.listdir(Path(__file__).parent / "plugins")
         plugin_names = map(
             lambda f: os.path.splitext(f)[0],
-            filter(lambda f: f.endswith(".py"), plugin_files),
+            filter(
+                lambda f: f.endswith(".py") and f != "__init__.py",
+                plugin_files,
+            ),
         )
         for plugin_name in plugin_names:
             module = importlib.import_module(f"edmond.plugins.{plugin_name}")