KT-5287 J2K: Convert class with private constructor and static functions to "object" instead of class with "class object"

#KT-5287 Fixed

j2k/testData/fileOrElement/constructors/secondaryConstructorsInNestedClass.kt

@@ -1,4 +1,4 @@
-class Outer {
+object Outer {
     private class Nested1() {
 
         public constructor(a: Int) : this() {
@@ -48,13 +48,10 @@ class Outer {
         }
     }
 
-    companion object {
-
-        fun foo() {
-            val nested1 = Nested1(1)
-            val nested2 = Nested2(2)
-            val nested3 = Nested3(3)
-            val nested4 = Nested4(4)
-        }
+    fun foo() {
+        val nested1 = Nested1(1)
+        val nested2 = Nested2(2)
+        val nested3 = Nested3(3)
+        val nested4 = Nested4(4)
     }
 }