Delete generated test cases, move testData to boxWithStdlib

compiler/testData/codegen/boxWithStdlib/dataClasses/copy/constructorWithDefaultParam.kt

@@ -0,0 +1,29 @@
+data class A(val a: Int = 1, val b: String = "$a") {}
+
+fun box() : String {
+    var result = ""
+    val a = A()
+    val b = a.copy()
+    if (b.a == 1 && b.b == "1") {
+        result += "1"
+    }
+
+    val c = a.copy(a = 2)
+    if (c.a == 2 && c.b == "1") {
+        result += "2"
+    }
+
+    val d = a.copy(b = "2")
+    if (d.a == 1 && d.b == "2") {
+        result += "3"
+    }
+
+    val e = a.copy(a = 2, b = "2")
+    if (e.a == 2 && e.b == "2") {
+        result += "4"
+    }
+    if (result == "1234") {
+        return "OK"
+    }
+    return "fail"
+}