Remove stale connections to DataLoaders. Bug: 263449831 Fixes: 263449831 Test: atest service.incremental_test Change-Id: Ia3da6ca047c46807cbd72ef797bb4b300c38efb3 (cherry picked from commit 96cac56f51fdac09d7e542d4dfa852b91b53e99b) Merged-In: Ia3da6ca047c46807cbd72ef797bb4b300c38efb3