logs filling up

[Rid]

Our logs are full of:

0|pm2-auto |   data:
0|pm2-auto |    { 'Loop delay': { value: '4.22ms', agg_type: 'avg', alert: {} },
0|pm2-auto |      'Active requests': { value: 0, agg_type: 'avg', alert: {} },
0|pm2-auto |      'Active handles': { value: 4, agg_type: 'avg', alert: {} } } }
0|pm2-auto | { type: 'axm:monitor',
0|pm2-auto |   data: { 'App updated': { value: 3, agg_type: 'avg', alert: {} } } }
0|pm2-auto | 2018-02-01 18:51:49 +00:00: { type: 'axm:monitor',
0|pm2-auto |   data:
0|pm2-auto |    { 'Loop delay': { value: '4.22ms', agg_type: 'avg', alert: {} },
0|pm2-auto |      'Active requests': { value: 0, agg_type: 'avg', alert: {} },
0|pm2-auto |      'Active handles': { value: 4, agg_type: 'avg', alert: {} } } }
0|pm2-auto | { type: 'axm:monitor',
0|pm2-auto |   data: { 'App updated': { value: 3, agg_type: 'avg', alert: {} } } }

Is there any way to disable these? It's generating over 20MB logs/day!