Revert "Extract synthetic source logic from DocumentParser (#116049)" (#119530)

This reverts commit e8d32af.

Author: lkts

benchmarks/src/main/java/org/elasticsearch/benchmark/index/mapper/LogsDbDocumentParsingBenchmark.java

@@ -241,7 +241,7 @@ public void setup() throws Exception {
                 new MetadataFieldMapper[] { dtfm },
                 Collections.emptyMap()
             );
-            MappingLookup mappingLookup = MappingLookup.fromMappers(mapping, List.of(dtfm, dateFieldMapper), List.of(), null);
+            MappingLookup mappingLookup = MappingLookup.fromMappers(mapping, List.of(dtfm, dateFieldMapper), List.of());
             indicesService = DataStreamTestHelper.mockIndicesServices(mappingLookup);
         }
 

modules/data-streams/src/test/java/org/elasticsearch/datastreams/DataStreamGetWriteIndexTests.java

@@ -49,7 +49,6 @@ public static DocumentMapper createEmpty(MapperService mapperService) {
             mapping,
             mapping.toCompressedXContent(),
             IndexVersion.current(),
-            mapperService.getIndexSettings(),
             mapperService.getMapperMetrics(),
             mapperService.index().getName()
         );
@@ -60,13 +59,12 @@ public static DocumentMapper createEmpty(MapperService mapperService) {
         Mapping mapping,
         CompressedXContent source,
         IndexVersion version,
-        IndexSettings indexSettings,
         MapperMetrics mapperMetrics,
         String indexName
     ) {
         this.documentParser = documentParser;
         this.type = mapping.getRoot().fullPath();
-        this.mappingLookup = MappingLookup.fromMapping(mapping, indexSettings);
+        this.mappingLookup = MappingLookup.fromMapping(mapping);
         this.mappingSource = source;
         this.mapperMetrics = mapperMetrics;
         this.indexVersion = version;