Do not create synthesized equals/hashCode/toString in data classes in compatibility mode

To simplify migration from 1.0 to 1.1, do not allow data classes to
automatically implement abstract equals/hashCode/toString declared in
super-interfaces (KT-11306) if "-language-version 1.0" is specified

compiler/testData/diagnostics/tests/sourceCompatibility/noDataClassInheritance.kt

@@ -11,3 +11,13 @@ class Derived: Base(42)
 <!DATA_CLASS_OVERRIDE_CONFLICT!>data<!> class Nasty(val z: Int, val y: Int): <!DATA_CLASS_CANNOT_HAVE_CLASS_SUPERTYPES!>Base<!>(z)
 
 data class Complex(val y: Int): Allowed, <!DATA_CLASS_CANNOT_HAVE_CLASS_SUPERTYPES!>NotAllowed<!>()
+
+
+
+interface AbstractEqualsHashCodeToString {
+    override fun equals(other: Any?): Boolean
+    override fun hashCode(): Int
+    override fun toString(): String
+}
+
+data <!ABSTRACT_MEMBER_NOT_IMPLEMENTED!>class ImplInterface<!>(val s: String) : AbstractEqualsHashCodeToString