Merge pull request #12052 from cbuescher/docs-strategy-filtered

Docs: Delete unsupported `strategy` parameter in filtered-query.asciidoc

docs/reference/query-dsl/filtered-query.asciidoc

@@ -94,61 +94,3 @@ Multiple filters can be applied by wrapping them in a
   }
 }
 --------------------------------------------------
-
-===== Filter strategy
-
-You can control how the filter and query are executed with the `strategy`
-parameter:
-
-[source,js]
---------------------------------------------------
-{
-    "filtered" : {
-        "query" :   { ... },
-        "filter" :  { ... },
-        "strategy": "leap_frog"
-    }
-}
---------------------------------------------------
-
-IMPORTANT: This is an _expert-level_ setting.  Most users can simply ignore it.
-
-The `strategy` parameter accepts the following options:
-
-[horizontal]
-`leap_frog_query_first`::
-
-        Look for the first document matching the query, and then alternatively
-        advance the query and the filter to find common matches.
-
-`leap_frog_filter_first`::
-
-    Look for the first document matching the filter, and then alternatively
-    advance the query and the filter to find common matches.
-
-`leap_frog`::
-
-    Same as `leap_frog_query_first`.
-
-`query_first`::
-
-    If the filter supports random access, then search for documents using the
-    query, and then consult the filter to check whether there is a match.
-    Otherwise fall back to `leap_frog_query_first`.
-
-`random_access_${threshold}`::
-
-    If the filter supports random access and if the number of documents in the
-    index divided by the cardinality of the filter is greater than ${threshold},
-    then apply the filter first.
-    Otherwise fall back to `leap_frog_query_first`. `${threshold}` must be
-    greater than or equal to `1`.
-
-`random_access_always`::
-
-    Apply the filter first if it supports random access. Otherwise fall back
-    to `leap_frog_query_first`.
-
-The default strategy is to use `query_first` on filters that are not
-advanceable such as geo filters and script filters, and `random_access_100` on
-other filters.