You will be require sometime to remove import/Export feature from user account. You can modify this settings from on Account and COS label.
Remove Import/Export feature from account
Remove Import Feature
$ zmprov ma shahzad@linuxsolution.in zimbraFeatureImportFolderEnabled FALSE
Remove Export Feature
$ zmprov ma shahzad@linuxsolution.in zimbraFeatureExportFolderEnabled FALSE
Modifying feature from COS it will apply on all account. But you can enable this feature if you require Import/Export feature in specific account.
Remove from COS
Syntax:
$ zmprov mc COS_Name Attribute_name FALSE/TRUE
Example:
Remove Import
$ zmprov mc default zimbraFeatureImportFolderEnabled FALSE
Remove Export
$ zmprov mc default zimbraFeatureExportFolderEnabled FALSE
Now check the feature , it removed.