remove golang version
diff --git a/go.mod b/go.mod
index 324100f..5a38e9e 100644
--- a/go.mod
+++ b/go.mod
@@ -5,5 +5,3 @@
 	github.com/pkg/errors v0.8.1
 	github.com/stretchr/testify v1.3.0
 )
-
-go 1.13