Remove volume parameter from default wav play cmd
Remove volume parameter from default wav play cmd

==== Fixed Issues ====
#943

Dark5ide/mycroft-core,Dark5ide/mycroft-core,MycroftAI/mycroft-core,aatchison/mycroft-core,linuxipho/mycroft-core,forslund/mycroft-core,forslund/mycroft-core,aatchison/mycroft-core,MycroftAI/mycroft-core,linuxipho/mycroft-core