[MINOR][DOCS] Remove wrong and ambiguous default statement in datetim… #11296

Job	Run time
Run / Check changes	43s
Run / Build modules: core, unsafe, kvstore, avro, utils, network-common, network-shuffle, repl, launcher, examples, sketch, variant	24m 7s
Run / Base image build	1m 38s
Run / Build modules: api, catalyst, hive-thriftserver	58m 44s
Run / Protobuf breaking change detection and Python CodeGen check	0s
Run / Run TPC-DS queries with SF=1	0s
Run / Build modules: mllib-local, mllib, graphx	38m 39s
Run / Build modules: streaming, sql-kafka-0-10, streaming-kafka-0-10, streaming-kinesis-asl, kubernetes, hadoop-cloud, spark-ganglia-lgpl, protobuf, connect	1h 25m 41s
Run / Build modules: hive - slow tests	51m 34s
Run / Run Docker integration tests	0s
Run / Run Spark UI tests	0s
Run / Build modules: hive - other tests	1h 21m 8s
Run / Build modules: sql - extended tests	1h 16m 32s
Run / Build modules: sql - slow tests	58m 17s
Run / Run Spark on Kubernetes Integration test	0s
Run / Build modules: sql - other tests	1h 25m 49s
Run / Linters, licenses, and dependencies	24m 50s
Run / Documentation generation	0s
Run / Build modules: sparkr	0s
Run / Build modules: pyspark-sql, pyspark-resource, pyspark-testing	1h 3m 21s
Run / Build modules: pyspark-core, pyspark-errors, pyspark-streaming	3m 32s
Run / Build modules: pyspark-mllib, pyspark-ml, pyspark-ml-connect	1h 19m 45s
Run / Build modules: pyspark-connect	1h 5m 39s
	13h 19m 59s

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