Before this commit user able to see and add customers on non fsm and non billable tasks/projects which is not provide any significance as user don't need customer for normal tasks/projects. So, in this commit hide customer field and also move partner phone and city to field service app as it was only usefull for FSM project and task. task-3141350 closes odoo/odoo#111335 Related: odoo/upgrade#4274 Related: odoo/enterprise#36459 Signed-off-by: Xavier Bol (xbo) <xbo@odoo.com>