8235514: Update record serialization tests to not use hard coded source versions

Reviewed-by: lancea

src/java.base/share/classes/java/lang/invoke/ConstantBootstraps.java

@@ -43,8 +43,7 @@ public final class ConstantBootstraps {
     /**
      * Do not call.
      */
-    @Deprecated(forRemoval=true, since="14")
-    public ConstantBootstraps() {}
+    private ConstantBootstraps() {throw new AssertionError();}
 
     // implements the upcall from the JVM, MethodHandleNatives.linkDynamicConstant:
     /*non-public*/

src/java.base/share/classes/java/lang/reflect/Modifier.java

@@ -46,8 +46,7 @@ public class Modifier {
     /**
      * Do not call.
      */
-    @Deprecated(forRemoval=true, since="14")
-    public Modifier() {}
+    private Modifier() {throw new AssertionError();}
 
 
     /**

src/jdk.rmic/share/classes/sun/tools/util/ModifierFilter.java

@@ -26,7 +26,7 @@
 package sun.tools.util;
 
 import sun.tools.java.*;
-
+import static java.lang.reflect.Modifier.*;
 
 /**
  *   A class whose instances are filters over Modifier bits.
@@ -43,7 +43,7 @@ import sun.tools.java.*;
  */
 
 public
-class ModifierFilter extends java.lang.reflect.Modifier {
+class ModifierFilter {
 
     /**
     * Package private access.