Refactor to not use logger from pipeline

[piyush-garg]

This is a refactoring to not use logger from
tektoncd/pipeline as it can be directly used from
knative.dev/pkg and also it has been from the
pipeline repo tektoncd/pipeline#3058
so whever there is a dependency bump it needs to
be done.

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[piyush-garg]

logger pkg has been removed from the pipeline using PR tektoncd/pipeline#3058

This is causing issue for cli as we want to bump the dependency to v0.16.3 of pipelines, go mod tidy is failing as the pkg is not available anymore in vendor and tektoncd/triggers need it. We will need to bump the triggers to this commit now.

cc @dibyom @savitaashture @khrm @dlorenc @vdemeester @danielhelfand

[dibyom]

Thanks @piyush-garg
/kind cleanup
/approve
/lgtm

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