Remove unnecessary checks for dict keys

With pyright v1.1.292 or later these checks are no longer necessary
(they were never necessary for the runtime, only added for pyright).

1 files changed, 2 insertions, 2 deletions

diff --git a/slack/slack_conversation.py b/slack/slack_conversation.py
index 2733302..913883c 100644
--- a/slack/slack_conversation.py
+++ b/slack/slack_conversation.py
@@ -67,7 +67,7 @@ class SlackConversation:
         return self._info["id"]
 
     async def name(self) -> str:
-        if "is_im" in self._info and self._info["is_im"] is True:
+        if self._info["is_im"] is True:
             im_user = await self.workspace.users[self._info["user"]]
             return im_user.nick()
         elif self._info["is_mpim"] is True:
@@ -83,7 +83,7 @@ class SlackConversation:
             return self._info["name"]
 
     def name_prefix(self, name_type: Literal["full_name", "short_name"]) -> str:
-        if "is_im" in self._info and self._info["is_im"] is True:
+        if self._info["is_im"] is True:
             if name_type == "short_name":
                 return " "
             else: