[Ref] [Import] Remove another 'in-between' class

[eileenmcnaughton]

Overview

Remove another 'in-between' class

As with Contribution & Membership there is a pointless in-between class that
is only inherited by one class...

Before

CRM_Activity_Import_Parser_Activity functions distributed between that class and it's unshared parent-class CRM_Activity_Import_Parser

After

Parent removed, functions moved to CRM_Activity_Import_Parser_Activity

Technical Details

Comments

[civibot]

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[colemanw]

Merging, it's the same cleanup as the others.