chore(ci): Remove keytool step #6990

Job	Run time
benchmark tests	4m 17s
go (examples)	46s
image build	1m 38s
integration tests	4m 11s
go (sdk)	1m 58s
go (service)	2m 51s
go (lib/ocrypto)	40s
go (lib/fixtures)	32s
go (lib/flattening)	33s
Protocol Buffer Lint and Gencode Up-to-date check	23s
license check	1m 2s
otdfctl e2e tests	4m 42s
platform-xtest / cross-client-test	8m 44s
ci	1s
	32m 18s

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