8286475: Drop --enable-preview from instanceof pattern matching related tests

Backport-of: 8c977050aa20a7e9a6d0d83d18dce25defcc7a46

Author: GoeLin

test/langtools/tools/javac/ConditionalExpressionResolvePending.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -35,7 +35,7 @@
  * @build toolbox.ToolBox toolbox.JavacTask
  * @build combo.ComboTestHelper
  * @compile ConditionalExpressionResolvePending.java
- * @run main/othervm --enable-preview ConditionalExpressionResolvePending
+ * @run main/othervm ConditionalExpressionResolvePending
  */
 
 import combo.ComboInstance;