[csswg-drafts] Remove an obsolete issue w/fantasai

Author: kojiishi

css-writing-modes/Overview.bs

@@ -2047,8 +2047,6 @@ Available Space in Orthogonal Flows</h4>
     as a <i>fallback</i> variable in place of the <i>available inline space</i>
     for calculations that require a definite <i>available inline size</i>.
 
-  <p class="issue">What is this section trying to say? I can't remember. :(
-
   <p>See [[!CSS3-SIZING]] for further details on CSS sizing terminology and concepts.
 
 <h4 id=auto-multicol>