Move some tests from boxWithStdlib/ to box/

Move those tests which do not require neither stdlib nor reflect

compiler/testData/codegen/boxWithStdlib/topLevelPrivate/privateInInlineNested.kt

@@ -1,19 +0,0 @@
-package test
-
-private val prop = "O"
-
-private fun test() = "K"
-
-inline internal fun call(p: () -> String): String = p()
-
-inline internal fun inlineFun(): String {
-    return call {
-        object {
-            fun run() = prop + test()
-        }.run()
-    }
-}
-
-fun box(): String {
-    return inlineFun();
-}

compiler/testData/codegen/boxWithStdlib/topLevelPrivate/privateVisibility.kt

@@ -1,18 +0,0 @@
-// FULL_JDK
-package test
-
-import java.lang.reflect.Modifier
-import kotlin.test.assertTrue
-
-
-private val prop = "O"
-
-private fun test() = "K"
-
-fun box(): String {
-    val clazz = Class.forName("test.PrivateVisibilityKt")
-    assertTrue(Modifier.isPrivate(clazz.getDeclaredMethod("test").modifiers), "Private top level function should be private")
-    assertTrue(Modifier.isPrivate(clazz.getDeclaredField("prop").modifiers), "Backing field for private top level property should be private")
-
-    return "OK"
-}

compiler/testData/codegen/boxWithStdlib/topLevelPrivate/syntheticAccessor.kt

@@ -1,11 +0,0 @@
-package test
-
-private val prop = "O"
-
-private fun test() = "K"
-
-fun box(): String {
-    return {
-        prop + test()
-    }()
-}