diff --git a/algocons/core/demo.proto b/algocons/core/demo.proto
deleted file mode 100644
index 75b4149..0000000
--- a/algocons/core/demo.proto
+++ /dev/null
@@ -1,19 +0,0 @@
-syntax = "proto3";
-
-package algocons.core;
-
-option go_package = "algocons.core";
-option java_package = "com.xhpolaris.idlgen.algocons.core";
-option java_outer_classname = "DemoProto";
-option java_multiple_files = true;
-
-import "basic/user.proto";
-
-message DemoReq {
-  basic.UserMeta user = 1;
-  basic.Extra extra = 2;
-}
-
-message DemoResp {
-
-}
\ No newline at end of file