Merge boxWithStdlib testData into box, delete BoxWithStdlib test

compiler/testData/codegen/box/jvmField/topLevelFieldReference.kt

@@ -0,0 +1,25 @@
+// WITH_RUNTIME
+
+package zzz
+import java.lang.reflect.Field
+import kotlin.test.assertEquals
+import kotlin.reflect.KProperty0
+
+@JvmField public val publicField = "1";
+@JvmField internal val internalField = "2";
+
+fun testAccessors() {
+    val kProperty: KProperty0<String> = ::publicField
+    checkAccessor(kProperty, "1")
+    checkAccessor(::internalField, "2")
+}
+
+
+fun box(): String {
+    testAccessors()
+    return "OK"
+}
+
+public fun <T, R> checkAccessor(prop: KProperty0<T>, value: R) {
+    assertEquals<Any?>(prop.get(), value, "Property ${prop} has wrong value")
+}