Deprecate smei_sortdirection option

This CC feature has launched some weeks ago, so there is no longer the
need to manually enable it via this extension option.

Change-Id: Iab36980b3d2383cb240f571d8124e2539dd3552b
diff --git a/src/common/common.js b/src/common/common.js
index 5703dbc..db20409 100644
--- a/src/common/common.js
+++ b/src/common/common.js
@@ -68,10 +68,6 @@
     defaultValue: false,
     context: 'options',
   },
-  'smei_sortdirection': {
-    defaultValue: false,
-    context: 'options',
-  },
   'enhancedannouncementsdot': {
     defaultValue: false,
     context: 'options',
@@ -106,6 +102,10 @@
     defaultValue: false,
     context: 'deprecated',
   },
+  'smei_sortdirection': {
+    defaultValue: false,
+    context: 'deprecated',
+  },
 };
 
 const specialOptions = [