To hide a filter value, please follow these steps:
Go to your Shopify Admin Store > App > Searchly.
Click on Filters and select General.
Select a filter to hide its value and click Manage Values.
You can now hide all values by clicking Mark All Hidden or if you want to hide a specific value (Wheels and Covers in this case) you can click on Status that is in an ACTIVE state and change it to HIDDEN. Hit the Save button.
Now run data sync by clicking Data Sync.
Please see this example for reference:
Filter with value:
Filter without value: