Cleanup dead code (#12929)

* Cleanup dead code

* Remove unneeded translation string

api4/file.go

@@ -65,92 +65,6 @@ func (api *API) InitFile() {
 
 }
 
-func uploadFile(c *Context, w http.ResponseWriter, r *http.Request) {
-	defer io.Copy(ioutil.Discard, r.Body)
-
-	if !*c.App.Config().FileSettings.EnableFileAttachments {
-		c.Err = model.NewAppError("uploadFile", "api.file.attachments.disabled.app_error", nil, "", http.StatusNotImplemented)
-		return
-	}
-
-	if r.ContentLength > *c.App.Config().FileSettings.MaxFileSize {
-		c.Err = model.NewAppError("uploadFile", "api.file.upload_file.too_large.app_error", nil, "", http.StatusRequestEntityTooLarge)
-		return
-	}
-
-	now := time.Now()
-	var resStruct *model.FileUploadResponse
-	var appErr *model.AppError
-
-	if err := r.ParseMultipartForm(*c.App.Config().FileSettings.MaxFileSize); err != nil && err != http.ErrNotMultipart {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	} else if err == http.ErrNotMultipart {
-		defer r.Body.Close()
-
-		c.RequireChannelId()
-		c.RequireFilename()
-
-		if c.Err != nil {
-			return
-		}
-
-		channelId := c.Params.ChannelId
-		filename := c.Params.Filename
-
-		if !c.App.SessionHasPermissionToChannel(c.App.Session, channelId, model.PERMISSION_UPLOAD_FILE) {
-			c.SetPermissionError(model.PERMISSION_UPLOAD_FILE)
-			return
-		}
-
-		resStruct, appErr = c.App.UploadFiles(
-			FILE_TEAM_ID,
-			channelId,
-			c.App.Session.UserId,
-			[]io.ReadCloser{r.Body},
-			[]string{filename},
-			[]string{},
-			now,
-		)
-	} else {
-		m := r.MultipartForm
-
-		props := m.Value
-		if len(props["channel_id"]) == 0 {
-			c.SetInvalidParam("channel_id")
-			return
-		}
-		channelId := props["channel_id"][0]
-		c.Params.ChannelId = channelId
-		c.RequireChannelId()
-		if c.Err != nil {
-			return
-		}
-
-		if !c.App.SessionHasPermissionToChannel(c.App.Session, channelId, model.PERMISSION_UPLOAD_FILE) {
-			c.SetPermissionError(model.PERMISSION_UPLOAD_FILE)
-			return
-		}
-
-		resStruct, appErr = c.App.UploadMultipartFiles(
-			FILE_TEAM_ID,
-			channelId,
-			c.App.Session.UserId,
-			m.File["files"],
-			m.Value["client_ids"],
-			now,
-		)
-	}
-
-	if appErr != nil {
-		c.Err = appErr
-		return
-	}
-
-	w.WriteHeader(http.StatusCreated)
-	w.Write([]byte(resStruct.ToJson()))
-}
-
 func parseMultipartRequestHeader(req *http.Request) (boundary string, err error) {
 	v := req.Header.Get("Content-Type")
 	if v == "" {