remove cffi dependency (#2555)

Co-authored-by: Patryk Czajka <[email protected]>

Author: ericbuehl

setup.cfg

@@ -46,7 +46,6 @@ install_requires =
     # [boto] extension is added by default unless SNOWFLAKE_NO_BOTO variable is set
     # check setup.py
     asn1crypto>0.24.0,<2.0.0
-    cffi>=1.9,<2.0.0
     cryptography>=3.1.0
     pyOpenSSL>=22.0.0,<26.0.0
     pyjwt<3.0.0