You cant delete them but you can edit them
To change the "myself" number click on myself and then click on i button in the left up corner (guy with a pen)
And put your new number and click on DONE!
And the ICE click on ICE and click on create new and put the info you want (name&number ) and click on DONE!
Hit thanks if helped
Xperia™ Z (C6602) with Tapatalk