Delete unused duplicate MAX_LIMIT
Delete unused duplicate MAX_LIMIT

Summary: Nobody was using this, and it's a duplicate of the setting in validation.py

Test Plan: Run unit tests

Reviewers: spang

Reviewed By: spang

Subscribers: jenkins

Differential Revision: https://phab.nylas.com/D3086

jobscore/sync-engine,nylas/sync-engine,nylas/sync-engine,jobscore/sync-engine,jobscore/sync-engine,closeio/nylas,closeio/nylas,nylas/sync-engine,nylas/sync-engine,jobscore/sync-engine,closeio/nylas,closeio/nylas