[MM-53943] Remove deprecated UserAuth.Password field (#24213)

server/public/model/user.go

@@ -183,7 +183,6 @@ func (u *UserPatch) Auditable() map[string]interface{} {
 
 //msgp:ignore UserAuth
 type UserAuth struct {
-	Password    string  `json:"password,omitempty"` // DEPRECATED: It is not used.
 	AuthData    *string `json:"auth_data,omitempty"`
 	AuthService string  `json:"auth_service,omitempty"`
 }