📝 remove (re)moved utility functions from documentation

Author: Paillat-dev

docs/api/utils.rst

@@ -25,12 +25,8 @@ Utility Functions
 
 .. autofunction:: discord.utils.raw_role_mentions
 
-.. autofunction:: discord.utils.resolve_invite
-
 .. autofunction:: discord.utils.resolve_template
 
-.. autofunction:: discord.utils.sleep_until
-
 .. autofunction:: discord.utils.utcnow
 
 .. autofunction:: discord.utils.snowflake_time
@@ -42,5 +38,3 @@ Utility Functions
 .. autofunction:: discord.utils.basic_autocomplete
 
 .. autofunction:: discord.utils.as_chunks
-
-.. autofunction:: discord.utils.filter_params