replace `wait_for_jobs_to_finish` with executor.wait()

[ieivanov]

There's an executor method (.wait()) that does this: https://github.com/facebookincubator/submitit/blob/64119dc669a21d69f46c9d9a3f556ce447d238d3/submitit/local/local.py#L343

Originally posted by @ziw-liu in #98 (comment)

[ziw-liu]

Correction: I've tested this in #104 and it works well for both slurm and local:

biahub/biahub/concatenate.py

Lines 441 to 442 in 8394696

	if block:
	_ = [job.result() for job in jobs]

[tayllatheodoro]

solved in 2e2b5f6
obs: .wait() is a job attribute, not an executor method