Most of the time you create a ssh key for your GIT or SSH login and you wished the system wouldn't ask the password each time, and here there is a solution to it.
openssl rsa -in private_key_with_pass_phrase -out private_key_without_pass_phrase
WARNING: a pass phrase is an added layer of security in case you loose control of your private key. Think carefully about removing the password.
Just replace the old key with the new one and you solved your problem.