update: remove dsp with v1(tekton)backend related code

[zdtsw]

no need review at the moment, lets wait and see how these images will be if we can totally remove the logic

Description

• images
• tekton rbac
• descriptions

https://issues.redhat.com/browse/RHOAIENG-14120

How Has This Been Tested?

Screenshot or short clip

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• The developer has manually tested the changes and verified that the changes work

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