Remove unnecessary semicolon.

props ixkaito.
fixes #29784.

git-svn-id: https://develop.svn.wordpress.org/trunk@29784 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/wp-db.php

@@ -2149,7 +2149,7 @@ class wpdb {
 				return version_compare( $version, '4.1', '>=' );
 			case 'set_charset' :
 				return version_compare( $version, '5.0.7', '>=' );
-		};
+		}
 
 		return false;
 	}