Removed unnecessary check since querySelectorAll always returns a NodeList

lib/js/segmented-controllers.js

@@ -38,11 +38,9 @@
 
     activeBodies = targetBody.parentNode.querySelectorAll(classSelector);
 
-    if (activeBodies) {
     for (var i = 0; i < activeBodies.length; i++){
       activeBodies[i].classList.remove(className);
     }
-    }
 
     targetBody.classList.add(className);
   });