Run go mod tidy

Remove unused dependencies from go.sum

Author: per1234

go.sum

@@ -1385,10 +1385,6 @@ golang.org/x/tools v0.0.0-20200117220505-0cba7a3a9ee9/go.mod h1:TB2adYChydJhpapK
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200203215610-ab391d50b528/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200308013534-11ec41452d41/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
-golang.org/x/tools v0.0.0-20201210181237-6d345e82f1d8 h1:Pg9rlomzMhg26WdvwSujvC1Pr2lxOfFfhnQ+/LQcjLw=
-golang.org/x/tools v0.0.0-20201210181237-6d345e82f1d8/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
-golang.org/x/tools v0.0.0-20201211185031-d93e913c1a58 h1:1Bs6RVeBFtLZ8Yi1Hk07DiOqzvwLD/4hln4iahvFlag=
-golang.org/x/tools v0.0.0-20201211185031-d93e913c1a58/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20201211192254-72fbef54948b h1:8fYBhX5ZQZtb7nVKo58TjndJwMM+cOB1xOnfjgH3uiY=
 golang.org/x/tools v0.0.0-20201211192254-72fbef54948b/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=