Remove a forgotten mention of -keys, -values, -entries

Author: dpk

srfi-250.html

@@ -195,11 +195,6 @@ <h3 id="Sources">Sources</h3>
 and <a href="https://code.google.com/archive/p/femtolisp/wikis/APIReference.wiki">FemtoLisp</a>
 were also investigated, but no additional procedures were incorporated.</p>
 
-<p>The <code>hash-table-keys</code>, <code>hash-table-values</code>,
-<code>hash-table-entries</code> (from SRFI 69) and the corresponding
-vector-based versions (used in R6RS) have been removed from this SRFI
-in favour of the cursor-based iteration interface.
-
 <h3 id="Pronunciation">Pronunciation</h3>
 
 <p>