8028757: CharSequence.subSequence improperly requires a "new" CharSequence be returned

Reviewed-by: alanb, darcy, mduigou

jdk/src/share/classes/java/lang/CharSequence.java

@@ -87,7 +87,7 @@ public interface CharSequence {
     char charAt(int index);
 
     /**
-     * Returns a new <code>CharSequence</code> that is a subsequence of this sequence.
+     * Returns a <code>CharSequence</code> that is a subsequence of this sequence.
      * The subsequence starts with the <code>char</code> value at the specified index and
      * ends with the <code>char</code> value at index <tt>end - 1</tt>.  The length
      * (in <code>char</code>s) of the

jdk/src/share/classes/java/lang/String.java

@@ -1958,7 +1958,7 @@ public final class String
     }
 
     /**
-     * Returns a new character sequence that is a subsequence of this sequence.
+     * Returns a character sequence that is a subsequence of this sequence.
      *
      * <p> An invocation of this method of the form
      *