Merge boxWithStdlib testData into box, delete BoxWithStdlib test

compiler/testData/codegen/box/arrays/inProjectionOfList.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+
+fun box(): String {
+    val x: Array<List<*>> = arrayOf(listOf(1))
+    val y : Array<in List<String>> = x
+
+    if (y.size != 1) return "fail 1"
+
+    y[0] = listOf("OK")
+
+    return x[0][0] as String
+}