Cleanup tasks

[mivade]

A lot of tasks needlessly define wrapper functions which just call another function. This makes the code hard to follow. Instead, we should be using the task decorator directly. Example:

ram_utils/ramutils/tasks/montage.py

Lines 24 to 26 in b33894b

	@task()
	def generate_pairs_for_classifier(pairs, excluded_pairs):
	return generate_pairs_for_classifier_core(pairs, excluded_pairs)