Remove helper function now that contribution settings is not weirdly stored

[eileenmcnaughton]

Overview

Minor code cleanup - now the setting is stored properly we just need setting::get to retrieve it

Before

Helper function to get the setting from a non-std array

After

Since the setting is no longer non-std we can just use setting.get

Technical Details

This is the only place that accesses this function / setting - it's as if it were defined properly all along
now - it was all just a dream.

Comments

[civibot]

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[eileenmcnaughton]

test this please