Remove unused errors package

errors/doc.go

@@ -1,2 +0,0 @@
-// Package errors provides custom error types used within restic.
-package errors

errors/fatal.go

@@ -1,35 +0,0 @@
-package errors
-
-import "fmt"
-
-// fatalError is an error that should be printed to the user, then the program should exit with an error code.
-type fatalError string
-
-func (e fatalError) Error() string {
-	return string(e)
-}
-
-func (e fatalError) Fatal() bool {
-	return true
-}
-
-// Fataler is an error which should be printed to the user directly.  Afterwards, the program should exit with an error.
-type Fataler interface {
-	Fatal() bool
-}
-
-// IsFatal returns true if err is a fatal message that should be printed to the user. Then, the program should exit.
-func IsFatal(err error) bool {
-	e, ok := err.(Fataler)
-	return ok && e.Fatal()
-}
-
-// Fatal returns a wrapped error which implements the Fataler interface.
-func Fatal(s string) error {
-	return Wrap(fatalError(s), "Fatal")
-}
-
-// Fatalf returns an error which implements the Fataler interface.
-func Fatalf(s string, data ...interface{}) error {
-	return fatalError(fmt.Sprintf(s, data...))
-}

errors/wrap.go

@@ -1,19 +0,0 @@
-package errors
-
-import "github.com/pkg/errors"
-
-// Cause returns the cause of an error.
-func Cause(err error) error {
-	return errors.Cause(err)
-}
-
-// New creates a new error based on message.  Wrapped so that this package does not appear in the stack trace.
-var New = errors.New
-
-// Errorf creates an error based on a format string and values.  Wrapped so that this package does not appear in the
-// stack trace.
-var Errorf = errors.Errorf
-
-// Wrap wraps an error retrieved from outside of restic.  Wrapped so that this package does not appear in the stack
-// trace.
-var Wrap = errors.Wrap