Clean Up the Contributing Documentation and Process: Part VII.LXVI.IV

* Fix yet another out-of-the-blue error that Stylelint found.

modules/default/clock/clock_styles.css

@@ -25,7 +25,6 @@
 
 .clockHour {
   width: 0;
-  
   height: 0;
   position: absolute;
   top: 50%;