Removed " var a duplicate "

Removed the var a duplicate line as requested.

Author: arianadavis

JavaScript/chapter02/2.2 - Return Kth to Last/solution.js

@@ -19,7 +19,6 @@ var findKthToLast = function(k, head) {
 
 /* Tests */ 
 var a = new linkedList('1');
-var a = new linkedList('1');
 var b = new linkedList('2');
 var c = new linkedList('3');
 var d = new linkedList('4');
@@ -38,4 +37,4 @@ findKthToLast(3, a);
 findKthToLast(10, a);
 findKthToLast(-1, a);
 findKthToLast(0, a);
-findKthToLast(1, a);
+findKthToLast(1, a);