Revert "Add screen content coding tools as an encoder configuration option"

This reverts commits:
b35c6a3
29f1a8a

Related issue: w3c#646

Author: Djuffin

av1_codec_registration.src.html

@@ -75,47 +75,6 @@
 contain a frame with a `frame_type` of `KEY_FRAME` as defined in Section
 6.8.2 of [[AV1]].
 
-VideoEncoderConfig extensions {#videoencoderconfig-extensions}
-==============================================================
-
-<pre class='idl'>
-<xmp>
-partial dictionary VideoEncoderConfig {
-  AV1EncoderConfig av1;
-};
-</xmp>
-</pre>
-
-<dl>
-  <dt><dfn dict-member for=VideoEncoderConfig>av1</dfn></dt>
-  <dd>
-    Contains codec specific configuration options for the AV1 codec.
-  </dd>
-</dl>
-
-AV1EncoderConfig {#av1-encoder-config}
---------------------------------------
-<pre class='idl'>
-<xmp>
-dictionary AV1EncoderConfig {
-  boolean forceScreenContentTools = false;
-};
-</xmp>
-</pre>
-
-<dl>
-  <dt><dfn dict-member for=AV1EncoderConfig>forceScreenContentTools</dfn></dt>
-  <dd>
-     Indicates whether the encoder should force use of screen content
-     coding tools. The default value (false) indicates that use of
-     screen content coding tools is not forced. A value of true
-     (corresponding to setting seq_force_screen_content_tools
-     to SELECT_SCREEN_CONTENT_TOOLS in Section 5.5.1
-     of [[AV1]]) indicates that use of screen content coding tools
-     is forced.
-  </dd>
-</dl>
-
 VideoEncoderEncodeOptions extensions {#videoencoderencodeoptions-extensions}
 ==============================================================