do not use gosu for snuba-transactions-cleanup and snuba-cleanup (#1564)

Author: goganchic

docker-compose.yml

@@ -264,15 +264,15 @@ services:
       context: ./cron
       args:
         BASE_IMAGE: "$SNUBA_IMAGE"
-    command: '"*/5 * * * * gosu snuba snuba cleanup --storage errors --dry-run False"'
+    command: '"*/5 * * * * snuba cleanup --storage errors --dry-run False"'
   snuba-transactions-cleanup:
     <<: *snuba_defaults
     image: snuba-cleanup-self-hosted-local
     build:
       context: ./cron
       args:
         BASE_IMAGE: "$SNUBA_IMAGE"
-    command: '"*/5 * * * * gosu snuba snuba cleanup --storage transactions --dry-run False"'
+    command: '"*/5 * * * * snuba cleanup --storage transactions --dry-run False"'
   symbolicator:
     <<: *restart_policy
     image: "$SYMBOLICATOR_IMAGE"