message: Chore: simplify Apache Kylin datetime convert
diff: @@ -33,11 +33,9 @@ class KylinEngineSpec(BaseEngineSpec): # pylint: disable=abstract-method
  "PT1M": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO MINUTE) AS TIMESTAMP)",
  "PT1H": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO HOUR) AS TIMESTAMP)",
  "P1D": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO DAY) AS DATE)",
  - "P1W": "CAST(TIMESTAMPADD(WEEK, WEEK(CAST({col} AS DATE)) - 1, \
  - FLOOR(CAST({col} AS TIMESTAMP) TO YEAR)) AS DATE)",
  + "P1W": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO WEEK) AS DATE)",
  "P1M": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO MONTH) AS DATE)",
  - "P0.25Y": "CAST(TIMESTAMPADD(QUARTER, QUARTER(CAST({col} AS DATE)) - 1, \
  - FLOOR(CAST({col} AS TIMESTAMP) TO YEAR)) AS DATE)",
  + "P0.25Y": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO QUARTER) AS DATE)",
  "P1Y": "CAST(FLOOR(CAST({col} AS TIMESTAMP) TO YEAR) AS DATE)",
  }
  