[Improvement-17001] Once workflow is not exist, delete scheduler task #19033

Job	Run time
Backend-Path-Filter	8s
Backend-Build (8)	12m 12s
Backend-Build (11)	10m 35s
cluster-test-mysql-with-zookeeper-registry	2m 38s
schema-check-with-mysql-3.1.9	1m 14s
cluster-test-mysql-with-mysql-registry	2m 41s
schema-check-with-postgresql-3.1.9	1m 31s
cluster-test-postgresql-zookeeper-registry	2m 29s
schema-check-with-mysql-3.2.0	1m 8s
cluster-test-postgresql-with-postgresql-registry	2m 50s
schema-check-with-postgresql-3.2.0	57s
Build	1s
	38m 24s

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