Prune extraneous unused parameter

Summary:
BasePayloadAnalyzer::loadConfiguration uses $this->project
and so doesn't need anymore the project as parameter.

Test Plan:

• Run tests
• Run phan, check there isn't any PhanParamTooMany

Reviewers: dereckson

Reviewed By: dereckson

Subscribers: alken-orin

Differential Revision: https://devcentral.nasqueron.org/D773