Remove discord.InvalidArgument

This uses TypeError and ValueError instead.

discord/utils.py

@@ -63,8 +63,6 @@ import sys
 import types
 import warnings
 
-from .errors import InvalidArgument
-
 try:
     import orjson
 except ModuleNotFoundError:
@@ -562,7 +560,7 @@ def _get_mime_type_for_image(data: bytes):
     elif data.startswith(b'RIFF') and data[8:12] == b'WEBP':
         return 'image/webp'
     else:
-        raise InvalidArgument('Unsupported image type given')
+        raise ValueError('Unsupported image type given')
 
 
 def _bytes_to_base64_data(data: bytes) -> str: