[css-writing-modes-4] Remove at-risk-ness of features what were removed from L3 so they could be put in L4 (here).

Author: fantasai

css-writing-modes-4/Overview.bs

@@ -15,8 +15,6 @@ Former Editor: Shinyu Murakami, Antenna House, murakami@antenna.co.jp
 Former Editor: Paul Nelson, Microsoft, paulnel@microsoft.com
 Former Editor: Michel Suignard, Microsoft, michelsu@microsoft.com
 Abstract: CSS Writing Modes Level 4 defines CSS support for various international writing modes, such as left-to-right (e.g. Latin or Indic), right-to-left (e.g. Hebrew or Arabic), bidirectional (e.g. mixed Latin and Arabic) and vertical (e.g. Asian scripts).
-At Risk: The ''sideways-lr'' and ''sideways-rl'' of 'writing-mode'
-At Risk: The ''digits'' value of 'text-combine-upright'.
 At Risk: The look-ahead/look-behind sequencing rules for 'text-combine-upright'.
 At Risk: <a href="#auto-multicol">Automatic multi-column behavior</a> of orthogonal flows.
 Ignored Terms: glyph orientation, *-left, *-right, *-top, *-bottom, text-combine-mode, root inline box, … message topic …, glyph-orientation-horizontal
@@ -812,11 +810,9 @@ Block Flow Direction: the 'writing-mode' property</h3>
     <dt><dfn>sideways-rl</dfn></dt>
     <dd>Right-to-left <a>block flow direction</a>.
         The <a>writing mode</a> is vertical, while the <a>typographic mode</a> is horizontal.
-        <p class="note">This value is at-risk and may be dropped during CR.
     <dt><dfn>sideways-lr</dfn></dt>
     <dd>Left-to-right <a>block flow direction</a>.
         The <a>writing mode</a> is vertical, while the <a>typographic mode</a> is horizontal.
-        <p class="note">This value is at-risk and may be dropped during CR.
   </dl>
 
   <p>The 'writing-mode' property specifies the <a>block flow direction</a>,