Revert "[exporter/elasticsearch] use validation for batcher" (#38254)

Reverts #38072

breaks mainline
http://github.com/open-telemetry/opentelemetry-collector-contrib/actions/runs/13571662124/job/37938103918

Author: songy23

.chloggen/elasticexporte-batcher.yaml

@@ -274,11 +274,6 @@ func (cfg *Config) Validate() error {
 	if cfg.Retry.MaxRetries < 0 {
 		return errors.New("retry::max_retries should be non-negative")
 	}
-	if batcherCfg, ok := cfg.exporterbatcherConfig(); ok {
-		if err := batcherCfg.Validate(); err != nil {
-			return fmt.Errorf("invalid batcher config: %w", err)
-		}
-	}
 
 	return nil
 }
@@ -319,18 +314,6 @@ func (cfg *Config) endpoints() ([]string, error) {
 	return endpoints, nil
 }
 
-func (cfg *Config) exporterbatcherConfig() (exporterbatcher.Config, bool) {
-	if cfg.Batcher.Enabled == nil {
-		return exporterbatcher.Config{}, false
-	}
-	return exporterbatcher.Config{
-		Enabled:       *cfg.Batcher.Enabled,
-		FlushTimeout:  cfg.Batcher.FlushTimeout,
-		MinSizeConfig: cfg.Batcher.MinSizeConfig,
-		MaxSizeConfig: cfg.Batcher.MaxSizeConfig,
-	}, true
-}
-
 func validateEndpoint(endpoint string) error {
 	if endpoint == "" {
 		return errConfigEmptyEndpoint

exporter/elasticsearchexporter/config.go

@@ -425,16 +425,6 @@ func TestConfig_Validate(t *testing.T) {
 			}),
 			err: `must not specify both retry::max_requests and retry::max_retries`,
 		},
-		"batcher max_size_items less than min_size_items": {
-			config: withDefaultConfig(func(cfg *Config) {
-				cfg.Endpoints = []string{"http://test:9200"}
-				cfg.Batcher.MaxSizeItems = 1000
-				cfg.Batcher.MinSizeItems = 2000
-				enableBatcher := true
-				cfg.Batcher.Enabled = &enableBatcher
-			}),
-			err: `max_size_items must be greater than or equal to min_size_items`,
-		},
 	}
 
 	for name, tt := range tests {

exporter/elasticsearchexporter/config_test.go

@@ -203,8 +203,14 @@ func exporterhelperOptions(
 		exporterhelper.WithShutdown(shutdown),
 		exporterhelper.WithQueue(cfg.QueueSettings),
 	}
-	if batcherCfg, ok := cfg.exporterbatcherConfig(); ok {
-		opts = append(opts, exporterhelper.WithBatcher(batcherCfg))
+	if cfg.Batcher.Enabled != nil {
+		batcherConfig := exporterbatcher.Config{
+			Enabled:       *cfg.Batcher.Enabled,
+			FlushTimeout:  cfg.Batcher.FlushTimeout,
+			MinSizeConfig: cfg.Batcher.MinSizeConfig,
+			MaxSizeConfig: cfg.Batcher.MaxSizeConfig,
+		}
+		opts = append(opts, exporterhelper.WithBatcher(batcherConfig))
 
 		// Effectively disable timeout_sender because timeout is enforced in bulk indexer.
 		//