Remove @private/@public/@void where visibility already set

When private is set php side on the function, no need to have it in the
param docs.

Change-Id: Ieaeac99c131b7360b1f324244d8be6f9ff854dd2

includes/SkinTemplate.php

@@ -112,7 +112,6 @@ class SkinTemplate extends Skin {
 	 * Generates array of language links for the current page
 	 *
 	 * @return array
-	 * @public
 	 */
 	public function getLanguages() {
 		global $wgHideInterlanguageLinks;

includes/Title.php

@@ -1371,7 +1371,6 @@ class Title {
 	 *
 	 * @param string $name The text
 	 * @return string The prefixed text
-	 * @private
 	 */
 	private function prefix( $name ) {
 		$p = '';

includes/db/DatabaseMssql.php

@@ -1295,9 +1295,6 @@ class DatabaseMssql extends DatabaseBase {
 			: array();
 	}
 
-	/**
-	 * @void
-	 */
 	private function populateColumnCaches() {
 		$res = $this->select( 'INFORMATION_SCHEMA.COLUMNS', '*',
 			array(

includes/media/FormatMetadata.php

@@ -1302,7 +1302,6 @@ class FormatMetadata extends ContextSource {
 	 * @param int $a Numerator
 	 * @param int $b Denominator
 	 * @return int
-	 * @private
 	 */
 	private function gcd( $a, $b ) {
 		/*