Removed maths/miller_rabin.py , Double implementation. #8098 (#9228)

* Removed ciphers/rabin_miller.py as it is already there maths/miller_rabin.py

* Renamed miller_rabin.py to rabain_miller.py

* Restore ciphers/rabin_miller.py and removed maths/rabin_miller.py

Author: aryan1165