Merge boxWithJava testData into box, delete BoxWithJava test

compiler/testData/codegen/box/multifileClasses/multifileClassWith2Files.kt

@@ -0,0 +1,23 @@
+// WITH_RUNTIME
+// FILE: Baz.java
+
+public class Baz {
+    public static String baz() {
+        return Util.foo() + Util.bar();
+    }
+}
+
+// FILE: bar.kt
+
+@file:JvmName("Util")
+@file:JvmMultifileClass
+public fun bar(): String = "K"
+
+// FILE: foo.kt
+
+@file:[JvmName("Util") JvmMultifileClass]
+public fun foo(): String = "O"
+
+// FILE: test.kt
+
+fun box(): String = Baz.baz()

compiler/testData/codegen/box/multifileClasses/multifileClassWithCrossCall.kt

@@ -0,0 +1,28 @@
+// WITH_RUNTIME
+// FILE: Baz.java
+
+public class Baz {
+    public static String baz() {
+        return Util.foo() + Util.bar();
+    }
+}
+
+// FILE: bar.kt
+
+@file:JvmName("Util")
+@file:JvmMultifileClass
+public fun bar(): String = barx()
+
+public fun foox(): String = "O"
+
+// FILE: foo.kt
+
+@file:JvmName("Util")
+@file:JvmMultifileClass
+public fun foo(): String = foox()
+
+public fun barx(): String = "K"
+
+// FILE: test.kt
+
+fun box(): String = Baz.baz()

compiler/testData/codegen/box/multifileClasses/multifileClassWithPrivate.kt

@@ -0,0 +1,28 @@
+// WITH_RUNTIME
+// FILE: Baz.java
+
+public class Baz {
+    public static String baz() {
+        return Util.foo() + Util.bar();
+    }
+}
+
+// FILE: bar.kt
+
+@file:JvmName("Util")
+@file:JvmMultifileClass
+public fun bar(): String = barx()
+
+private fun barx(): String = "K"
+
+// FILE: foo.kt
+
+@file:JvmName("Util")
+@file:JvmMultifileClass
+public fun foo(): String = foox()
+
+private fun foox(): String = "O"
+
+// FILE: test.kt
+
+fun box(): String = Baz.baz()