chore(folio): drop the gate harness wiring from the example app

examples/folio/.gitignore

@@ -8,6 +8,5 @@ app/iosApp/iosApp.xcodeproj/**
 .DS_Store
 sanderling/node_modules/
 sanderling/runs/
-sanderling/gates/
 .playwright-mcp/
 web-*.png

examples/folio/justfile

@@ -173,10 +173,3 @@ test-ios:
       --duration "{{duration}}" \
       --seed "{{seed}}" \
       --output "{{output}}"
-
-# BACKEND=simulator (default) or BACKEND=device; honors RUNS/DURATION/SEED and
-# the IOS_DEVICE/--ios-device convention. `just gates --self-test` runs the
-# offline analyzer tests without a device.
-# Run the iOS conformance gate: five serial 3-minute runs scored against G1..G5.
-gates *args:
-    "{{justfile_directory()}}/gates.sh" {{args}}