Remove old signin handler
Remove old signin handler


Former-commit-id: f2a56a688bdf89df3be2abb259ab426ab72ff4bd [formerly bd35d203f833876ca4769729bd3dcd441b537740] [formerly d22fc14a448d3833bc2202a3e92fc94a2e24a03b [formerly 70124394d5e249d0c41fd0adf6f21383a69cc248]]
Former-commit-id: 927d0ec66bb63aef0710b60aa5ee5fb262fd4924 [formerly 98f22317d1c97c9f6d7e5e166d7f12c95b8951c0]
Former-commit-id: d84862855b1d62932d076ed7348a0d3ff2ea60c4
ioGrow/iogrowCRM,ioGrow/iogrowCRM,ioGrow/iogrowCRM