Merge boxWithStdlib testData into box, delete BoxWithStdlib test

compiler/testData/codegen/box/reified/DIExample.kt

@@ -0,0 +1,26 @@
+// WITH_RUNTIME
+
+import kotlin.test.assertEquals
+import kotlin.reflect.KProperty
+
+class Project {
+    fun <T> getInstance(cls: Class<T>): T =
+        when (cls.getName()) {
+            "java.lang.Integer" -> 1 as T
+            "java.lang.String" -> "OK" as T
+            else -> null!!
+        }
+}
+
+inline operator fun <reified T : Any> Project.getValue(t: Any?, p: KProperty<*>): T = getInstance(T::class.java)
+
+val project = Project()
+val x1: Int by project
+val x2: String by project
+
+fun box(): String {
+    assertEquals(1, x1)
+    assertEquals("OK", x2)
+
+    return "OK"
+}