Revert "support sendemail about md file."

This reverts commit de508fb.

Author: zqburde

dss-appconn/appconns/dss-sendemail-appconn/sendemail-appconn-core/src/main/scala/com/webank/wedatasphere/dss/appconn/sendemail/conf/SendEmailAppConnConfiguration.scala

@@ -52,6 +52,5 @@ object SendEmailAppConnConfiguration {
   val EMAIL_ENTITY_CLASSES = CommonVars("wds.dss.appconn.email.hook.entity.classes",
     "com.webank.wedatasphere.dss.appconn.sendemail.hook.entity.newvisualis.NewVisualisEmailInfo," +
       "com.webank.wedatasphere.dss.appconn.sendemail.hook.entity.visualis.VisualisEmailInfo," +
-      "com.webank.wedatasphere.dss.appconn.sendemail.hook.entity.visualis.MetaBaseEmailInfo," +
-      "com.webank.wedatasphere.dss.appconn.sendemail.hook.entity.mlss.MlssEmailInfo")
+      "com.webank.wedatasphere.dss.appconn.sendemail.hook.entity.visualis.MetaBaseEmailInfo")
 }

dss-appconn/appconns/dss-sendemail-appconn/sendemail-appconn-core/src/main/scala/com/webank/wedatasphere/dss/appconn/sendemail/email/domain/MdAttachment.scala

@@ -20,15 +20,14 @@ import java.awt.image.BufferedImage
 import java.io.{ByteArrayInputStream, ByteArrayOutputStream, InputStream}
 import java.util
 import java.util.{Base64, Iterator, UUID}
-import com.webank.wedatasphere.dss.appconn.sendemail.email.domain.{AbstractEmail, ExcelAttachment, MdAttachment, MultiContentEmail, PdfAttachment, PngAttachment}
+
+import com.webank.wedatasphere.dss.appconn.sendemail.email.domain.{AbstractEmail, ExcelAttachment, MultiContentEmail, PdfAttachment, PngAttachment}
 import com.webank.wedatasphere.dss.appconn.sendemail.emailcontent.domain.PictureEmailContent
 import org.apache.linkis.common.conf.Configuration
-
 import javax.imageio.{ImageIO, ImageReader}
 import org.apache.commons.codec.binary.Base64OutputStream
 import com.webank.wedatasphere.dss.appconn.sendemail.conf.SendEmailAppConnConfiguration._
 import com.webank.wedatasphere.dss.appconn.sendemail.exception.EmailSendFailedException
-
 import javax.imageio.stream.ImageInputStream
 import org.apache.commons.io.IOUtils
 import org.apache.linkis.common.utils.Utils
@@ -47,12 +46,6 @@ object PictureEmailContentParser extends AbstractEmailContentParser[PictureEmail
           val decoder = Base64.getDecoder
           val byteArr = decoder.decode(imageStr)
           multiContentEmail.addAttachment(new PdfAttachment(pdfName, Base64.getEncoder.encodeToString(byteArr)))
-        case "md" =>
-          val mdUUID: String = UUID.randomUUID.toString
-          val mdName = mdUUID + ".md"
-          val decoder = Base64.getDecoder
-          val byteArr = decoder.decode(imageStr)
-          multiContentEmail.addAttachment(new MdAttachment(mdName, Base64.getEncoder.encodeToString(byteArr)))
         case "excel" =>
           //val excelUUID: String = UUID.randomUUID.toString
           val excelName = emailContent.getFileName + ".xlsx"