Re-mute context suggestion rest test

This reverts commit 6a392f9.

Author: jimczi

rest-api-spec/src/main/resources/rest-api-spec/test/suggest/30_context.yml

@@ -339,8 +339,8 @@ setup:
 ---
 "Indexing and Querying without contexts is deprecated":
   - skip:
-      version: " - 6.3.99"
-      reason: this feature was deprecated in 6.4
+      version: " - 6.9.99"
+      reason: https://github.com/elastic/elasticsearch/issues/31116
       features: "warnings"
 
   - do: