How do I delete a record in my index from the Algolia dashboard?

Click the "trash can" icon. 

You can also remove your records following these methods:
 

1. Remove objects from an index using their objectID. This method enables you to remove one or more objects from an index.
    
2. Remove all objects matching a filter (including geo filters). This method enables you to delete one or more objects based on filters (numeric, facet, tag or geo queries).
    
3. Select 'Clear' from the 'Manage Index' dropdown. This will clear all the records in your index, but will leave configuration settings intact: