[Improvement-17001] Once workflow is not exist, delete scheduler task #19030

Job	Run time
Backend-Path-Filter	7s
Backend-Build (8)	11m 36s
Backend-Build (11)	10m 53s
cluster-test-mysql-with-zookeeper-registry	2m 36s
cluster-test-mysql-with-mysql-registry	2m 49s
schema-check-with-mysql-3.1.9	1m 6s
cluster-test-postgresql-zookeeper-registry	2m 30s
schema-check-with-postgresql-3.1.9	56s
cluster-test-postgresql-with-postgresql-registry	3m 21s
schema-check-with-mysql-3.2.0	1m 3s
schema-check-with-postgresql-3.2.0	59s
Build	1s
	37m 57s

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