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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def remove_known_hosts(overcloud_ip):
 """For a given IP address remove SSH keys from the known_hosts file"""


    known_hosts = os.path.expanduser("~/.ssh/known_hosts")

    if os.path.exists(known_hosts):
        command = ['ssh-keygen', '-R', overcloud_ip, '-f', known_hosts]
        subprocess.check_call(command)