[css-align] Why did we add this orthogonal behavior? It doesn't make sense.

Author: tabatkins

css-align/Overview.bs

@@ -231,14 +231,10 @@ Positional Alignment: the ''center'', ''start'', ''end'', ''self-start'', ''self
 		<dt><dfn for="<item-position>">self-start</dfn>
 		<dd>Aligns the <a>alignment subject</a> to be flush with the edge of the <a>alignment container</a>
 			corresponding to the <a>alignment subject</a>’s start side.
-			If the <a>writing modes</a> of the <a>alignment subject</a> and the <a>alignment container</a> are <a>orthogonal</a>,
-			this value computes to ''start''.
 
 		<dt><dfn for="<item-position>">self-end</dfn>
 		<dd>Aligns the <a>alignment subject</a> to be flush with the edge of the <a>alignment container</a>
 			corresponding to the <a>alignment subject</a>’s end side.
-			If the <a>writing modes</a> of the <a>alignment subject</a> and the <a>alignment container</a> are <a>orthogonal</a>,
-			this value computes to ''end''.
 
 		<dt><dfn for="<item-position>, <content-position>">flex-start</dfn>
 		<dd><strong>Only used in flex layout.</strong> [[!CSS3-FLEXBOX]]

css-align/Overview.html

@@ -641,16 +641,12 @@ <h3 class="heading settled" data-level="3.1" id="positional-values"><span class=
 		</dt>
         <dd>Aligns the <a data-link-type="dfn" href="#alignment-subject">alignment subject</a> to be flush with the edge of the <a data-link-type="dfn" href="#alignment-container">alignment container</a>
 			corresponding to the <a data-link-type="dfn" href="#alignment-subject">alignment subject</a>’s start side.
-			If the <a data-link-type="dfn" href="http://dev.w3.org/csswg/css-writing-modes-3/#writing-mode">writing modes</a> of the <a data-link-type="dfn" href="#alignment-subject">alignment subject</a> and the <a data-link-type="dfn" href="#alignment-container">alignment container</a> are <a data-link-type="dfn" href="http://dev.w3.org/csswg/css-writing-modes-3/#establish-an-orthogonal-flow">orthogonal</a>,
-			this value computes to <a class="css" data-link-type="maybe" href="#valdef-item-position-content-position-start">start</a>.
 
 		</dd>
         <dt><dfn class="css" data-dfn-for="<item-position>" data-dfn-type="value" data-export="" id="valdef-item-position-self-end">self-end<a class="self-link" href="#valdef-item-position-self-end"></a></dfn>
 		</dt>
         <dd>Aligns the <a data-link-type="dfn" href="#alignment-subject">alignment subject</a> to be flush with the edge of the <a data-link-type="dfn" href="#alignment-container">alignment container</a>
 			corresponding to the <a data-link-type="dfn" href="#alignment-subject">alignment subject</a>’s end side.
-			If the <a data-link-type="dfn" href="http://dev.w3.org/csswg/css-writing-modes-3/#writing-mode">writing modes</a> of the <a data-link-type="dfn" href="#alignment-subject">alignment subject</a> and the <a data-link-type="dfn" href="#alignment-container">alignment container</a> are <a data-link-type="dfn" href="http://dev.w3.org/csswg/css-writing-modes-3/#establish-an-orthogonal-flow">orthogonal</a>,
-			this value computes to <a class="css" data-link-type="maybe" href="#valdef-item-position-content-position-end">end</a>.
 
 		</dd>
         <dt><dfn class="css" data-dfn-for="<item-position>, <content-position>" data-dfn-type="value" data-export="" id="valdef-item-position-content-position-flex-start">flex-start<a class="self-link" href="#valdef-item-position-content-position-flex-start"></a></dfn>