removed redundant code

Author: zainh96

Ordered Set/README.md

@@ -51,11 +51,6 @@ Lets take a look at the insert function first. The insert function first checks
       if exists(item) {
           return // don't add an item if it already exists
       }
-      // if the set is initially empty, we need to simply append the item to internalSet
-      if count == 0 {
-          internalSet.append(item)
-          return
-      }
 
       for i in 0..<count {
           if internalSet[i] > item {