[DOCS] Removes out-dated x-pack/docs/en/index.asciidoc

x-pack/docs/en/index.asciidoc

@@ -1,32 +0,0 @@
-
-include::{es-repo-dir}/index-shared1.asciidoc[]
-
-include::setup/setup-xes.asciidoc[]
-
-include::{xes-repo-dir}/monitoring/configuring-monitoring.asciidoc[]
-
-include::{xes-repo-dir}/security/configuring-es.asciidoc[]
-
-include::setup/setup-xclient.asciidoc[]
-
-include::{xes-repo-dir}/settings/configuring-xes.asciidoc[]
-
-include::setup/bootstrap-checks-xes.asciidoc[]
-
-include::{es-repo-dir}/index-shared2.asciidoc[]
-
-include::{es-repo-dir}/index-shared3.asciidoc[]
-
-include::sql/index.asciidoc[]
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-include::monitoring/index.asciidoc[]
-
-include::rollup/index.asciidoc[]
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-include::rest-api/index.asciidoc[]
-
-include::commands/index.asciidoc[]
-
-include::{es-repo-dir}/index-shared4.asciidoc[]
-
-include::{es-repo-dir}/index-shared5.asciidoc[]