diff --git a/proxy/pkg/middleware/errors.go b/proxy/pkg/middleware/errors.go
deleted file mode 100644
index 18cfcca0e..000000000
--- a/proxy/pkg/middleware/errors.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package middleware
-
-import (
-	"errors"
-)
-
-var (
-	// ErrInvalidToken is returned when the request token is invalid.
-	ErrInvalidToken = errors.New("invalid or missing token")
-
-	// ErrUnauthorized is returned if the request is not authorized
-	ErrUnauthorized = errors.New("unauthorized")
-
-	// ErrInternal is returned if something went wrong
-	ErrInternal = errors.New("internal error")
-)