entc/gen: remove unnecessary function from codegen (#3287)

examples/start/ent/car.go

@@ -150,9 +150,3 @@ func (c *Car) String() string {
 
 // Cars is a parsable slice of Car.
 type Cars []*Car
-
-func (c Cars) config(cfg config) {
-	for _i := range c {
-		c[_i].config = cfg
-	}
-}

examples/start/ent/group.go

@@ -121,9 +121,3 @@ func (gr *Group) String() string {
 
 // Groups is a parsable slice of Group.
 type Groups []*Group
-
-func (gr Groups) config(cfg config) {
-	for _i := range gr {
-		gr[_i].config = cfg
-	}
-}

examples/start/ent/user.go

@@ -148,9 +148,3 @@ func (u *User) String() string {
 
 // Users is a parsable slice of User.
 type Users []*User
-
-func (u Users) config(cfg config) {
-	for _i := range u {
-		u[_i].config = cfg
-	}
-}