Collection tests: format and fix usages of deprecated symbols.

libraries/stdlib/test/collections/ListSpecificTest.kt

@@ -12,10 +12,9 @@ class ListSpecificTest {
     }
 
     Test fun tail() {
-        val data = arrayListOf("foo", "bar", "whatnot")
+        val data = listOf("foo", "bar", "whatnot")
         val actual = data.drop(1)
-        val expected = arrayListOf("bar", "whatnot")
-        assertEquals(expected, actual)
+        assertEquals(listOf("bar", "whatnot"), actual)
     }
 
     Test fun slice() {