refactor: Remove github.com/pkg/errors from Attribution.txt

Signed-off-by: Jack Chen <[email protected]>

Author: jackchenjc

Attribution.txt

@@ -177,9 +177,6 @@ https://github.com/square/go-jose/blob/v2.6.0/LICENSE
 gopkg.in/yaml.v2 (MIT) https://github.com/go-yaml/yaml/
 https://github.com/go-yaml/yaml/blob/v2/LICENSE
 
-pkg/errors (BSD-2) https://github.com/pkg/errors
-https://github.com/pkg/errors/blob/master/LICENSE
-
 rcrowley/go-metrics (Unspecified) https://github.com/rcrowley/go-metrics
 https://github.com/rcrowley/go-metrics/blob/master/LICENSE