Merge pull request #19964 from terabytesoftw/remove-deprecated-connec…

…tion

Remove deprecated methods to `Connection::class`.

framework/db/Connection.php

@@ -289,15 +289,6 @@ class Connection extends Component
      * @see pdo
      */
     public $pdoClass;
-    /**
-     * @var string the class used to create new database [[Command]] objects. If you want to extend the [[Command]] class,
-     * you may configure this property to use your extended version of the class.
-     * Since version 2.0.14 [[$commandMap]] is used if this property is set to its default value.
-     * @see createCommand
-     * @since 2.0.7
-     * @deprecated since 2.0.14. Use [[$commandMap]] for precise configuration.
-     */
-    public $commandClass = 'yii\db\Command';
     /**
      * @var array mapping between PDO driver names and [[Command]] classes.
      * The keys of the array are PDO driver names while the values are either the corresponding
@@ -760,9 +751,7 @@ public function createCommand($sql = null, $params = [])
     {
         $driver = $this->getDriverName();
         $config = ['class' => 'yii\db\Command'];
-        if ($this->commandClass !== $config['class']) {
-            $config['class'] = $this->commandClass;
-        } elseif (isset($this->commandMap[$driver])) {
+        if (isset($this->commandMap[$driver])) {
             $config = !is_array($this->commandMap[$driver]) ? ['class' => $this->commandMap[$driver]] : $this->commandMap[$driver];
         }
         $config['db'] = $this;