remove timezone from i18n formatter

framework/base/Formatter.php

@@ -69,11 +69,6 @@ class Formatter extends Component
 	public $thousandSeparator;
 
 	/**
-	 * @var \DateTimeZone
-	 */
-	private $_timeZone;
-
-	/**
 	 * Initializes the component.
 	 */
 	public function init()
@@ -82,9 +77,9 @@ class Formatter extends Component
 			$this->timeZone = Yii::$app->timeZone;
 		}
 		if (is_string($this->timeZone)) {
-			$this->_timeZone = new \DateTimeZone($this->timeZone);
-		} elseif ($this->_timeZone instanceof IntlTimeZone) {
-			$this->_timeZone = $this->timeZone->toDateTimeZone();
+			$this->timeZone = new \DateTimeZone($this->timeZone);
+		} elseif ($this->timeZone instanceof IntlTimeZone) {
+			$this->timeZone = $this->timeZone->toDateTimeZone();
 		}
 
 		if (empty($this->booleanFormat)) {
@@ -356,7 +351,7 @@ class Formatter extends Component
 	{
 		$date = new DateTime();
 		$date->setTimestamp($value);
-		$date->setTimezone($this->_timeZone);
+		$date->setTimezone($this->timeZone);
 		return $date->format($format);
 	}
 

framework/i18n/Formatter.php

@@ -39,15 +39,6 @@ class Formatter extends \yii\base\Formatter
 	 */
 	public $locale;
 	/**
-	 * @var string|\IntlTimeZone|\DateTimeZone the timezone to use for formatting time and date values.
-	 * This can be any value that may be passed to [date_default_timezone_set()](http://www.php.net/manual/en/function.date-default-timezone-set.php)
-	 * e.g. `UTC`, `Europe/Berlin` or `America/Chicago`.
-	 * Refer to the [php manual](http://www.php.net/manual/en/timezones.php) for available timezones.
-	 * This can also be an IntlTimeZone or a DateTimeZone object.
-	 * If not set, [[\yii\base\Application::timezone]] will be used.
-	 */
-	public $timeZone;
-	/**
 	 * @var string the default format string to be used to format a date.
 	 * This can be "short", "medium", "long", or "full", which represents a preset format of different lengths.
 	 * It can also be a custom format as specified in the [ICU manual](http://userguide.icu-project.org/formatparse/datetime).
@@ -98,9 +89,6 @@ class Formatter extends \yii\base\Formatter
 		if ($this->locale === null) {
 			$this->locale = Yii::$app->language;
 		}
-		if ($this->timeZone === null) {
-			$this->timeZone = Yii::$app->timeZone;
-		}
 		if ($this->decimalSeparator === null || $this->thousandSeparator === null) {
 			$formatter = new NumberFormatter($this->locale, NumberFormatter::DECIMAL);
 			if ($this->decimalSeparator === null) {