Disable Messages module helps you to disable any type of message in drupal.
It module has following features.
- Filter out messages that match a full text string exactly.
- Filter out messages that match a regular expression.
- Permissions to specifically hide all messages of a given type from any role.
- Disable all filtering for specific users.
- Disable all filtering for specific paths.
- Apply filtering only for specific paths.
- Debug system to get messages in the HTML without showing it to the end users.
Once you install the module you can see the configuration options at admin/settingsconfig/development/disable-messages.
For your requirement just enter following text in "Messages to be disabled:" textarea.
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Note : Make sure necessary permission to be set like below.