make tidy

Signed-off-by: shirly <[email protected]>

go.sum

@@ -381,8 +381,6 @@ github.com/pierrec/lz4 v2.5.2+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi
 github.com/pingcap-incubator/tidb-dashboard v0.0.0-20210104140916-41a0a3a87e75/go.mod h1:EONGys2gM5n14pII2vjmU/5VG3Dtj6kpqUT1GUZ4ysw=
 github.com/pingcap/badger v1.5.1-0.20200908111422-2e78ee155d19 h1:IXpGy7y9HyoShAFmzW2OPF0xCA5EOoSTyZHwsgYk9Ro=
 github.com/pingcap/badger v1.5.1-0.20200908111422-2e78ee155d19/go.mod h1:LyrqUOHZrUDf9oGi1yoz1+qw9ckSIhQb5eMa1acOLNQ=
-github.com/pingcap/br v4.0.0-beta.2.0.20210115100158-7a7b4a421c0a+incompatible h1:idKUWy8no4l5bhnVAhLm4PeiASI411O2XADzpuJmicg=
-github.com/pingcap/br v4.0.0-beta.2.0.20210115100158-7a7b4a421c0a+incompatible/go.mod h1:ymVmo50lQydxib0tmK5hHk4oteB7hZ0IMCArunwy3UQ=
 github.com/pingcap/br v4.0.0-beta.2.0.20210220133344-578be7fb5165+incompatible h1:Zd4LjoIYVmGF9KW484B0F+XvFHlcp9hraI5FAB9h1/I=
 github.com/pingcap/br v4.0.0-beta.2.0.20210220133344-578be7fb5165+incompatible/go.mod h1:ymVmo50lQydxib0tmK5hHk4oteB7hZ0IMCArunwy3UQ=
 github.com/pingcap/check v0.0.0-20190102082844-67f458068fc8/go.mod h1:B1+S9LNcuMyLH/4HMTViQOJevkGiik3wW2AN9zb2fNQ=