MMCTL: Add import delete cmd for removing the import files (#29764)

Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>

server/public/model/client4.go

@@ -574,6 +574,10 @@ func (c *Client4) exportRoute(name string) string {
 	return fmt.Sprintf(c.exportsRoute()+"/%v", name)
 }
 
+func (c *Client4) importRoute(name string) string {
+	return fmt.Sprintf(c.importsRoute()+"/%v", name)
+}
+
 func (c *Client4) remoteClusterRoute() string {
 	return "/remotecluster"
 }
@@ -8798,6 +8802,15 @@ func (c *Client4) ListImports(ctx context.Context) ([]string, *Response, error)
 	return c.ArrayFromJSON(r.Body), BuildResponse(r), nil
 }
 
+func (c *Client4) DeleteImport(ctx context.Context, name string) (*Response, error) {
+	r, err := c.DoAPIDelete(ctx, c.importRoute(name))
+	if err != nil {
+		return BuildResponse(r), err
+	}
+	defer closeBody(r)
+	return BuildResponse(r), nil
+}
+
 func (c *Client4) ListExports(ctx context.Context) ([]string, *Response, error) {
 	r, err := c.DoAPIGet(ctx, c.exportsRoute(), "")
 	if err != nil {