Error message asking for @DiscriminatorValue, removed a few versions ago

[saulotoledo]

Issue type:

[ ] question
[X] bug report
[ ] feature request
[ ] documentation issue

Database system/driver:

[ ] cordova
[ ] mongodb
[ ] mssql
[ ] mysql / mariadb
[ ] oracle
[X] postgres
[ ] cockroachdb
[ ] sqlite
[ ] sqljs
[ ] react-native
[ ] expo

TypeORM version:

[X] latest
[ ] @next
[ ] 0.x.x (or put your version here)

Steps to reproduce or a small repository showing the problem:

According to the changelog, @DiscriminatorValue was removed in 0.2.0, but the error message for duplicated discriminators still suggest to use it. The example below shows the issue after forgetting to change the discriminator:

entities/user.ts:

@Entity('user')
@TableInheritance({column: {type: 'varchar', name: 'type'}})
export class User {

    @PrimaryGeneratedColumn()
    public id: number;

}

entities/admin.ts:

@ChildEntity('admin')
export class Administrator extends User {
}

entities/editor.ts:

@ChildEntity('admin')
export class Editor extends User {
}