update tests

Author: erik-krogh

javascript/ql/test/query-tests/Statements/IgnoreArrayResult/IgnoreArrayResult.expected

@@ -1,2 +1,2 @@
-| tst.js:3:1:3:19 | arr.concat([1,2,3]) | Return value from call to concat ignored. |
-| tst.js:5:1:5:15 | arr.concat(arr) | Return value from call to concat ignored. |
+| tst.js:3:1:3:19 | arr.concat([1,2,3]) | Result from call to concat ignored. |
+| tst.js:5:1:5:15 | arr.concat(arr) | Result from call to concat ignored. |

javascript/ql/test/query-tests/Statements/IgnoreArrayResult/IgnoreArrayResult.qlref

@@ -1 +1 @@
-Statements/IgnoreConcatReturn.ql
+Statements/IgnoreArrayResult.ql

javascript/ql/test/query-tests/Statements/IgnoreArrayResult/tst.js

@@ -6,8 +6,4 @@ arr.concat(arr); // NOT OK!
 
 console.log(arr.concat([1,2,3]));
 
-arr.concat(null);
-arr.concat();
-arr.concat([]);
-
 ({concat: Array.prototype.concat}.concat(arr));