Remove 'application/efi' from MIME type tests

Removed redundant MIME type 'application/efi' from test cases.

Author: clin1234

Lib/test/test_mimetypes.py

@@ -227,7 +227,6 @@ def check_extensions():
                 ("application/epub+zip", ".epub"),
                 ("application/octet-stream", ".bin"),
                 ("application/dicom", ".dcm"),
-                ("application/efi", ".efi"),
                 ("application/gzip", ".gz"),
                 ("application/ogg", ".ogx"),
                 ("application/pdf", ".pdf"),