[css-sizing-4] Remove tr unit from min/max-width/height w3c#3268

Author: fantasai

css-sizing-4/Overview.bs

@@ -211,47 +211,6 @@ Intrinsic Aspect Ratios: the 'aspect-ratio' property</h3>
 		</pre>
 	</div>
 
-<h3 id="ar-width-height">
-Aspect Ratio Limits Option B: the ''tr'' unit</h3>
-
-	<pre class="partial propdef">
-	Name: min-width, min-height, max-width, max-height
-	New Values: <<transfer-ratio>>
-	Computed value: ''tr'' dimension value
-	</pre>
-
-	The <dfn type=value for="min-width, min-height, max-width, max-height"><<transfer-ratio>></dfn> value,
-	which is a <a>dimension</a> with the unit ''tr'',
-	specifies that the used value of the property
-	is calculated from the used size of the opposite dimension
-	multiplied by the ''tr'' value.
-
-	ISSUE: Define a table of all the ways this creates conflicts and cycles and break them.
-
-	<div class="example">
-		In the following example,
-		the box is as wide as the container (as usual),
-		and its height is as tall as needed to contain its content
-		but at least as tall as it is wide.
-
-		<pre>
-		  div {
-		    min-height: 1tr;
-		  }
-		</pre>
-
-		<pre class="figure">
-		+----------+  +----------+  +----------+
-		| ~~~~~~~~ |  | ~~~~~~~~ |  | ~~~~~~~~ |
-		| ~~~~~~~~ |  | ~~~~~~~~ |  | ~~~~~~~~ |
-		| ~~~~~~~  |  | ~~~~~~~~ |  | ~~~~~~~~ |
-		|          |  | ~~~      |  | ~~~~~~~~ |
-		+----------+  +----------+  | ~~~~~~~~ |
-		                            | ~~~~~~   |
-		                            +----------+
-		</pre>
-	</div>
-
 <h2 id='intrinsic'>
 Intrinsic Size Determination</h2>