Remove github.com/pkg/errors (#216)

go.mod

@@ -4,10 +4,9 @@ go 1.16
 
 require (
 	github.com/Microsoft/go-winio v0.6.0 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
 	github.com/golang-cz/textcase v1.2.0
-	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/go-cmp v0.5.9
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/kevinburke/ssh_config v1.2.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect

go.sum

@@ -26,7 +26,6 @@ github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=

schema/ridl/error_parser.go

@@ -2,8 +2,6 @@ package ridl
 
 import (
 	"fmt"
-
-	"github.com/pkg/errors"
 )
 
 // error <code> <name> <message> [HTTP <status code>]
@@ -55,7 +53,7 @@ func parserStateErrorMessage(et *ErrorNode) parserState {
 			p.next()
 
 		default:
-			return p.stateError(errors.Errorf("expected <message> but got %v", tok))
+			return p.stateError(fmt.Errorf("expected <message> but got %v", tok))
 		}
 
 		return parserStateErrorExplicitStatusCode(et)