*errors.errorString: Removing network for build

Sentry Issue: INTERNAL-GITLAB-RUNNERS-30

*errors.errorString: Removing network for build
  File "/builds/gitlab-org/gitlab-runner/helpers/sentry/log_hook.go", line 45, in Fire
  File "/go/pkg/mod/github.com/sirupsen/logrus@v1.4.2/hooks.go", line 28, in Fire
  File "/go/pkg/mod/github.com/sirupsen/logrus@v1.4.2/entry.go", line 246, in fireHooks
  File "/go/pkg/mod/github.com/sirupsen/logrus@v1.4.2/entry.go", line 224, in log
  File "/go/pkg/mod/github.com/sirupsen/logrus@v1.4.2/entry.go", line 268, in Log
...
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Removing network for build