Remove toString() test for StorageManager

Storing place of creating was removed in cb32bc97dd

compiler/tests/org/jetbrains/kotlin/storage/StorageManagerTest.java

@@ -498,13 +498,6 @@ public class StorageManagerTest extends TestCase {
         }
     }
 
-    // toString()
-
-    public void testToString() throws Exception {
-        assertTrue("Should mention the setUp() method of this class: " + m.toString(),
-                   m.toString().contains(getClass().getSimpleName() + ".setUp("));
-    }
-
     // Utilities
 
     private static <K, V> Function0<V> apply(final Function1<K, V> f, final K x) {