Java to Kotlin converter: no more 2 conversion modes for each test, just a few tests to test non-standard settings

j2k/tests/testData/ast/function/overrideObject.kt

@@ -1,23 +1,23 @@
 package test
 
-open class Test() {
-    public open fun hashCode(): Int {
+class Test() {
+    public fun hashCode(): Int {
         return System.identityHashCode(this)
     }
 
-    public open fun equals(o: Any?): Boolean {
+    public fun equals(o: Any): Boolean {
         return this.identityEquals(o)
     }
 
-    protected open fun clone(): Any? {
+    protected fun clone(): Any {
         return super.clone()
     }
 
-    public open fun toString(): String? {
+    public fun toString(): String {
         return getJavaClass<Test>.getName() + '@' + Integer.toHexString(hashCode())
     }
 
-    protected open fun finalize() {
+    protected fun finalize() {
         super.finalize()
     }
 }