test: switch biome to warn on delete

Signed-off-by: Tierney Cyren <[email protected]>

Author: bnb

biome.json

@@ -11,7 +11,10 @@
 	"linter": {
 		"enabled": true,
 		"rules": {
-			"recommended": true
+			"recommended": true,
+			"performance": {
+        "noDelete": "warn"
+      }
 		}
 	}
 }