Remove a wee bit o’ trailing whitespace

test/built-ins/WeakSet/prototype/delete/delete-entry.js

@@ -28,4 +28,4 @@ s.add(foo);
 var result = s.delete(foo);
 
 assert.sameValue(s.has(foo), false);
-assert.sameValue(result, true, 'WeakSet#delete returns true');
+assert.sameValue(result, true, 'WeakSet#delete returns true');
\ No newline at end of file

test/built-ins/WeakSet/symbol-disallowed-as-weakset-key.js

@@ -13,5 +13,3 @@ var sym = Symbol();
 assert.throws(TypeError, function() {
   weakset.add(sym);
 });
-
-