chore: remove unnecessary using directive #3340

Job	Run time
Check Formatting	1m 53s
Build Admin UI Container Image	2m 38s
Build Admin CLI Container Image	50s
Build Files Sanity Check Container Image	1m 8s
Build Consumer API Container Image	1m 33s
Build Helm Chart	7s
Run Integration Tests (on Postgres)	6m 17s
Run Integration Tests (on SQL Server)	6m 59s
Run Admin UI Checks	35s
Run Tests	2m 8s
Run transport Tests (on Postgres)	7m 21s
Run transport Tests (on SQL Server)	6m 12s
	37m 41s

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