Fix double-slash URL in hivesense-api requests

Remove explicit urlPath from hivesense-api configuration to match the
pattern used by hafah-api and hivemind-api. This prevents double-slash
URLs (e.g., https://api.hive.blog//hivesense-api/) that occur when the
endpoint URL has a trailing slash and wax adds a separator before the
urlPath.

Without the explicit urlPath, wax uses the object key name
'hivesense-api' as the base path, which handles endpoint URLs
consistently regardless of trailing slashes.