I have Magento 2.2.x and system.log grows each minute, because of entries like:
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Customer::customer_manage was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Customer::customer_online was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Customer::customer_group was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_AdminNotification::system_adminnotification was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Config::system_config was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Indexer::system_index was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Cms::cms_page was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Cms::cms_block was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Catalog::catalog was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Catalog::catalog_products was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Catalog::catalog_categories was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Catalog::catalog_attributes_attributes was processed [] []
[2018-09-30 17:53:15] main.INFO: Add of item with id Magento_Catalog::catalog_attributes_sets was processed [] []
How can I stop Magento logging such info?