refactor(coprocessor): remove tenants notion from DB and related code #7252

Job	Run time
coprocessor-gpu-tests/check-changes	8s
coprocessor-gpu-tests/setup-instance	4m 0s
coprocessor-gpu-tests/tests (bpr) (ubuntu-22.04, 12.2, 11)	1h 24m 26s
coprocessor-gpu-tests/teardown	19s
	1h 28m 53s

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