Drop another attr_accessible call
Drop another attr_accessible call

MSP-11326

farias-r7/metasploit_data_models,bcook-r7/metasploit_data_models,farias-r7/metasploit_data_models,rapid7/metasploit_data_models,rapid7/metasploit_data_models,bcook-r7/metasploit_data_models,farias-r7/metasploit_data_models,rapid7/metasploit_data_models,bcook-r7/metasploit_data_models