Revert "[8.19] Backport ES|QL sample processing command (elastic#129617)" (elastic#129797)

* Revert "[8.19] Backport ES|QL sample processing command (elastic#129617)"

This reverts commit 1d05947.

Author: nik9000

docs/changelog/125570.yaml

@@ -0,0 +1,5 @@
+pr: 129797
+summary: "Revert \"[8.19] Backport ES|QL sample processing command\""
+area: ES|QL
+type: bug
+issues: []

docs/changelog/129797.yaml

@@ -46,7 +46,6 @@ endif::[]
 * experimental:[] <<esql-lookup-join>>
 * experimental:[] <<esql-mv_expand>>
 * <<esql-rename>>
-* experimental:[] <<esql-sample>>
 * <<esql-sort>>
 * <<esql-stats-by>>
 * <<esql-where>>
@@ -71,7 +70,6 @@ include::processing-commands/limit.asciidoc[]
 include::processing-commands/lookup.asciidoc[]
 include::processing-commands/mv_expand.asciidoc[]
 include::processing-commands/rename.asciidoc[]
-include::processing-commands/sample.asciidoc[]
 include::processing-commands/sort.asciidoc[]
 include::processing-commands/stats.asciidoc[]
 include::processing-commands/where.asciidoc[]

docs/reference/esql/esql-commands.asciidoc

@@ -249,8 +249,7 @@ GET /_xpack/usage
       "lookup_join" : 0,
       "change_point" : 0,
       "completion": 0,
-      "rerank": 0,
-      "sample": 0
+      "rerank": 0
     },
     "queries" : {
       "rest" : {

docs/reference/esql/functions/description/date_trunc.asciidoc

@@ -244,7 +244,6 @@ static TransportVersion def(int id) {
     public static final TransportVersion SETTINGS_IN_DATA_STREAMS_8_19 = def(8_841_0_51);
     public static final TransportVersion ML_INFERENCE_CUSTOM_SERVICE_REMOVE_ERROR_PARSING_8_19 = def(8_841_0_52);
     public static final TransportVersion ML_INFERENCE_CUSTOM_SERVICE_EMBEDDING_BATCH_SIZE_8_19 = def(8_841_0_53);
-    public static final TransportVersion RANDOM_SAMPLER_QUERY_BUILDER_8_19 = def(8_841_0_54);
 
     /*
      * STOP! READ THIS FIRST! No, really,