Update doc

genindex.html

@@ -167,10 +167,6 @@
 <table style="width: 100%" class="indextable genindextable"><tr>
   <td style="width: 33%" valign="top"><dl>
       
-  <dt><a href="apiref.html#c.nghttp2_adjust_priority_callback">nghttp2_adjust_priority_callback (C type)</a>
-  </dt>
-
-      
   <dt><a href="apiref.html#c.NGHTTP2_ALTSVC">NGHTTP2_ALTSVC (C macro)</a>
   </dt>
 
@@ -1025,10 +1021,6 @@
   </dt>
 
       
-  <dt><a href="apiref.html#c.nghttp2_session_callbacks.adjust_priority_callback">nghttp2_session_callbacks.adjust_priority_callback (C member)</a>
-  </dt>
-
-      
   <dt><a href="apiref.html#c.nghttp2_session_callbacks.before_frame_send_callback">nghttp2_session_callbacks.before_frame_send_callback (C member)</a>
   </dt>