NAS-130907 / 25.04 / Removed REST from test_150_cronjob

[aiden3c]

Also updated the file name to remove the numbering

[bugclerk]

Jira URL: https://ixsystems.atlassian.net/browse/NAS-130907

[yocalebo]

Looking at what this test module does, we can combine all these steps into 2 functions:

1. create cronjob and wait for it to run, verify it etc
2. delete cronjob and cleanup TESTFILE

[aiden3c]

Looking at what this test module does, we can combine all these steps into 2 functions:

I think that I might just make it one so it can use the same cronjob_dict object, but I'll make sure to annotate with comments

[bugclerk]

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