Merge pull request #43 from darkdef/small-enh

add schemaInterface and remove ConstraintFinderTrait.php & ConstraintFinderInterface.php

src/Schema.php

@@ -11,8 +11,6 @@
 use Yiisoft\Db\Connection\Connection;
 use Yiisoft\Db\Constraint\CheckConstraint;
 use Yiisoft\Db\Constraint\Constraint;
-use Yiisoft\Db\Constraint\ConstraintFinderInterface;
-use Yiisoft\Db\Constraint\ConstraintFinderTrait;
 use Yiisoft\Db\Constraint\ForeignKeyConstraint;
 use Yiisoft\Db\Constraint\IndexConstraint;
 use Yiisoft\Db\Exception\Exception;
@@ -29,10 +27,8 @@
  * @property string $lastInsertID The row ID of the last row inserted, or the last value retrieved from the
  * sequence object. This property is read-only.
  */
-final class Schema extends AbstractSchema implements ConstraintFinderInterface
+final class Schema extends AbstractSchema
 {
-    use ConstraintFinderTrait;
-
     /**
      * @var array map of DB errors and corresponding exceptions.
      *