Cleanup deprecated symbol usages in testData

js/js.translator/testData/examples/cases/overloadBinaryOperator.kt

@@ -21,5 +21,5 @@ fun box(): String {
     v1.add("foo")
     v2.add("bar")
     val v3 = v1 + v2
-    return if (v3.contents.size() == 2) "OK" else "fail"
+    return if (v3.contents.size == 2) "OK" else "fail"
 }

js/js.translator/testData/examples/cases/overloadPlusAssignReturn.kt

@@ -23,5 +23,5 @@ fun box(): String {
     val v3 = v1
     v2.add("bar")
     v1 += v2
-    return if (v1.contents.size() == 2 && v3.contents.size() == 2) "OK" else "fail"
+    return if (v1.contents.size == 2 && v3.contents.size == 2) "OK" else "fail"
 }

js/js.translator/testData/examples/cases/overloadPlusToPlusAssign.kt

@@ -26,5 +26,5 @@ fun box(): String {
     val v3 = v1
     v2.add("bar")
     v1 += v2
-    return if (v1.contents.size() == 2 && v3.contents.size() == 1) "OK" else "fail"
+    return if (v1.contents.size == 2 && v3.contents.size == 1) "OK" else "fail"
 }

js/js.translator/testData/examples/cases/overloadUnaryOperator.kt

@@ -10,7 +10,7 @@ class ArrayWrapper<T>() {
     operator fun unaryMinus(): ArrayWrapper<T> {
         val result = ArrayWrapper<T>()
         result.contents.addAll(contents)
-        var i = contents.size();
+        var i = contents.size;
         for (a in contents) {
             result.contents[--i] = a;
         }