Fix code smells

tests/MD_STD_Test.php

@@ -12,7 +12,6 @@
  * Tests for MD_STD.
  */
 final class MD_STD_Test extends TestCase {
-
     /**
      * Returns sample dates and their equivalent integer values according
      * to MD_STD::date_to_int().
@@ -58,5 +57,4 @@ public function test_date_to_int(string $date, int $expectedInt):void {
         self::assertEquals($date, $toStr);
 
     }
-
 }