[docs] remove mentions of bot only usability

discord/client.py

@@ -1255,10 +1255,9 @@ class Client:
     async def fetch_user(self, user_id):
         """|coro|
 
-        Retrieves a :class:`~discord.User` based on their ID. This can only
-        be used by bot accounts. You do not have to share any guilds
-        with the user to get this information, however many operations
-        do require that you do.
+        Retrieves a :class:`~discord.User` based on their ID. 
+        You do not have to share any guilds with the user to get this information,
+        however many operations do require that you do.
 
         .. note::