Hello Bruno,
Unfortunately the "Clear Suspect" gesture is not available in the CLI. From the Integrity Client User Guide in the Managing Suspect Trace Relationships section:
"You can clear selected suspect traces from a content item using the Clear
Suspect… menu command, or you can clear all suspect traces on a content item
using Clear All Suspect…. When you select Clear All Suspect…, you then have the
option of clearing all suspect traces on all fields for the content item, or clearing all
suspect traces on selected fields for the content item. The commands are available
only in the Integrity Client graphical user interface (they are not available in the
Web interface or CLI.)"