[ETL] remove all etl-related code

.gitignore

@@ -15,10 +15,8 @@ zookeeper.dockerfile
 controller.dockerfile
 broker.dockerfile
 app.dockerfile
-spark.dockerfile
 deps.dockerfile
 worker.dockerfile
-etl.dockerfile
 hadoop.dockerfile
 # we don't put binary file to git repo
 gradle-wrapper.jar

README.md

@@ -31,7 +31,6 @@
 11. [GUI](docs/gui/README.md): 簡單好用的叢集資訊圖形化工具
 12. [Connector](./docs/connector/README.md): 提供基於 `kafka connector` 實作的高效平行化工具，包含效能測試和資料遷移等工具
 13. [Build](docs/build_project.md): 說明如何建構與測試本專案各模組
-14. [etl](./docs/etl/README.md): 構建 spark-kafka 的資料傳輸通道
 
 # Kafka Q&A
 

build.gradle

@@ -36,9 +36,4 @@ spotless {
             }
         }
     }
-    scala {
-        licenseHeaderFile(file("$rootDir/checkstyle/apache.header"), "package ")
-        target '**/scala/**/*.scala'
-        scalafmt()
-    }
 }