[AIRFLOW-6487] Romove unnecessary for-loop

[Gabriel39]

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Link to JIRA issue: https://issues.apache.org/jira/browse/AIRFLOW-6487
Romove unnecessary for loop:

In DagFileProcessorManager, dag files are processed periodically. Processor manager will put dag into queue except file_paths_in_progress, file_paths_recently_processed and files_paths_at_run_limit. While min_file_process_interval = 0 in config by default, there is unnecessary for-loop when get file_paths_recently_processed.

• Description above provides context of the change
• Commit message/PR title starts with [AIRFLOW-NNNN]. AIRFLOW-NNNN = JIRA ID^*
• Unit tests coverage for changes (not needed for documentation changes)
• Commits follow "How to write a good git commit message"
• Relevant documentation is updated including usage instructions.
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^* For document-only changes commit message can start with [AIRFLOW-XXXX].

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[boring-cyborg]

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[codecov-io]

Codecov Report

Merging #7079 into master will decrease coverage by 0.28%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #7079      +/-   ##
==========================================
- Coverage   85.07%   84.79%   -0.29%     
==========================================
  Files         680      680              
  Lines       38810    38812       +2     
==========================================
- Hits        33019    32909     -110     
- Misses       5791     5903     +112

Impacted Files	Coverage Δ
airflow/utils/dag_processing.py	87.66% <100%> (-0.34%)	⬇️
airflow/kubernetes/volume_mount.py	44.44% <0%> (-55.56%)	⬇️
airflow/kubernetes/volume.py	52.94% <0%> (-47.06%)	⬇️
airflow/kubernetes/pod_launcher.py	45.25% <0%> (-46.72%)	⬇️
airflow/kubernetes/refresh_config.py	50.98% <0%> (-23.53%)	⬇️
...rflow/contrib/operators/kubernetes_pod_operator.py	78.75% <0%> (-20%)	⬇️

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[bolkedebruin]

Can you ensure tests are provided?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.