Fix missing info (#17107)

### Summary

1. Fix docker/service_conf.yaml.template
2. Remove unused config

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

conf/service_conf.yaml

@@ -66,8 +66,6 @@ otel:
   enable: false
 ingestor:
   mq_type: 'nats'
-task_executor:
-  message_queue_type: 'nats'
 file_syncer:
   max_concurrent_syncs: 4
   sync_interval: 3

docker/service_conf.yaml.template

@@ -75,8 +75,9 @@ otel:
   secure: false
   sample_ratio: 1.0
   stdout: false
-task_executor:
-  message_queue_type: 'nats'
+  enable: false
+ingestor:
+  mq_type: 'nats'
 file_syncer:
   max_concurrent_syncs: 4
   sync_interval: 3

internal/server/config.go

@@ -51,7 +51,6 @@ type Config struct {
 	UserDefaultLLM   UserDefaultLLMConfig   `mapstructure:"user_default_llm"`
 	DefaultSuperUser DefaultSuperUser       `mapstructure:"default_super_user"`
 	Language         string                 `mapstructure:"language"`
-	TaskExecutor     TaskExecutorConfig     `mapstructure:"task_executor"`
 	Ingestor         IngestorConfig         `mapstructure:"ingestor"`
 	FileSyncer       FileSyncerConfig       `mapstructure:"file_syncer"`
 	OTel             OtelConfig             `mapstructure:"otel"`