New J2K: remove initializer from property without backing field

#KT-33637 fixed

nj2k/testData/newJ2k/detectProperties/NoBackingField.java

@@ -0,0 +1,7 @@
+public class Host {
+    private String name;
+
+    public String getName() {
+        return "Name";
+    }
+}

nj2k/testData/newJ2k/detectProperties/NoBackingField.kt

@@ -0,0 +1,4 @@
+class Host {
+    val name: String?
+        get() = "Name"
+}