[css-flexbox] Remove some issues.

Author: tabatkins

css-flexbox/Overview.bs

@@ -2076,9 +2076,6 @@ Line Length Determination</h3>
 					then the <i>flex base size</i> is calculated from its inner <i>cross size</i>
 					and the <i>flex item</i>&rsquo;s intrinsic aspect ratio.
 
-					<p class='issue'>
-						This substep needs review, see thread at <a href="http://lists.w3.org/Archives/Public/www-style/2012Oct/0781.html">http://lists.w3.org/Archives/Public/www-style/2012Oct/0781.html</a>.
-
 				<li>
 					If the <a>flex basis</a> is <a value for=width>auto</a> or depends on its available size,
 					and the flex container is being sized under a min-content or max-content constraint
@@ -2170,12 +2167,6 @@ Cross Size Determination</h3>
 			by performing layout with the used main size and the available space,
 			treating <a value for=width>auto</a> as ''fit-content''.
 
-			<p class='note issue'>
-				Note that if the flex item's cross size is indefinite,
-				any children with percentage cross sizes will be resolved as for <a value for=width>auto</a>.
-				However, if the flex item is ''align-self: stretch'',
-				these will be resolved in a later step.
-
 		<li id='algo-cross-line'>
 			<strong>Calculate the cross size of each flex line.</strong>
 
@@ -2247,16 +2238,14 @@ Cross Size Determination</h3>
 			Otherwise,
 			the used cross size is the item's <i>hypothetical cross size</i>.
 
+			If the flex item has ''align-self: stretch'',
+			redo layout for its contents,
+			treating this used size as its definite cross size
+			so that percentage-sized children can be resolved.
+
 			<p class='note'>
 				Note that this step does not affect the main size of the flex item,
 				even if it has an intrinsic aspect ratio.
-
-			<p class='issue'>
-				Proposed text:
-				If the flex item has ''align-self: stretch'',
-				redo layout for its contents,
-				treating this used size as its definite cross size
-				so that percentage-sized children can be resolved.
 	</ol>
 
 <h3 id='main-alignment'>