resolve 2 TODOs in dialogxml

rsrc/dialogs/slimy-stair-up.xml

@@ -5,9 +5,6 @@
 	<button name='leave' type='regular' top='37' left='242'>Leave</button>
 	<button name='climb' type='regular' top='37' left='176'>Climb</button>
 	<pict type='dlog' num='19' top='8' left='8'/>
-	<!--
-	 TODO: This one is cut off at the bottom in the browser; verify this doesn't also happen in-game.
-	 -->
 	<text top='3' left='50' width='250' height='32'>
 		You find a stairway heading up.
 		The steps are covered with a thin layer of slick, unpleasant slime.

rsrc/dialogs/steal-item.xml

@@ -3,9 +3,6 @@
 <?xml-stylesheet href="dialog.xsl" type="text/xsl"?>
 <!--DOCTYPE dialog SYSTEM	"dialog.dtd"-->
 <dialog defbtn='leave'>
-	<!--
-	 TODO: The defbtn value about should be 'leave'; I left it like this to see if xmllint could catch it.
-	 -->
 	<pict type='monst' num='12' top='6' left='6'/>
 	<text top='6' left='48' width='246' height='35'>
 		This item is clearly someone's property.