Add remove_search_suggestion

[sigma67]

Is your feature request related to a problem? Please describe. Followup to #494 -- user should be able to remove a search suggestion (as done in the Web UI via the trash bin icon)

Describe the solution you'd like

• extend get_search_suggestions (with detailed runs arg) to return the feedbackTokens needed
• implement a function remove_search_suggestion

Describe alternatives you've considered none

Additional context none