delete ast DAG templates

csst_dag/dag_config/csst-msc-l1-ast.json

-{
-    "dag_id": "csst-msc-l1-ast",
-    "dag_run_id": "12345",
-    "batch_id": "msc-093-reduction-v2",
-    "message": {
-        "obsid": "10109300543790",
-        "chipid": "09",
-        "dataset": "msc-093",
-        "batch_id": "msc-093-reduction-v2"
-    }
-}

csst_dag/dag_config/csst-msc-l1-ast.yml

-# 定义DAG的基本信息
-dag_id: "csst-msc-l1-ast"
-  
-# 定义任务
-tasks:
-  task1:
-    image: csst-msc-l1-qc0
-    tag: latest
-    force_pull: true
-    bash_command: "python /pipeline/app/run.py {message}"
-  task2:
-    image: csst-msc-l1-ast
-    tag: latest
-    force_pull: true
-    bash_command: "python /pipeline/app/run.py {message}"
-    upstream_tasks: ["task1"]  # 定义依赖关系，task2依赖task1
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