chore: remove legacy designer melos scripts

melos.yaml

@@ -132,14 +132,6 @@ scripts:
     packageFilters:
       scope: studyu_app
 
-  build:web:designer:
-    run: |
-      melos exec -c 1 --fail-fast -- \
-        "flutter build web --web-renderer auto --no-tree-shake-icons"
-    description: Build designer for Web.
-    packageFilters:
-      scope: studyu_designer
-
   build:web:designer_v2:
     run: |
       melos exec -c 1 --fail-fast -- \
@@ -209,14 +201,6 @@ scripts:
       scope: studyu_app
     description: Runs app in chrome on port 8080 with local env
 
-  designer:web:local:
-    run: |
-      melos exec -c 1 -- \
-        "flutter run lib/main.dart -d chrome --web-port 8083 --dart-define=STUDYU_ENV=.env.local"
-    packageFilters:
-      scope: studyu_designer
-    description: Runs designer in chrome on port 8083 with local env
-
   designer_v2:web:local:
     run: |
       melos exec -c 1 -- \