Java to Kotlin converter: do not generate redundant parenthesis for empty constructor parameters

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

@@ -1,8 +1,8 @@
-class A() {
+class A {
     fun a() {
     }
 }
-class B() : A() {
+class B : A() {
     override fun a() {
     }
 }