[Tizen] Remove check symbol workflow

check-symbol workflow is a task to check for verify
the API of Galaxy Store for Galaxy Watch series(Tizen wearable profile).

Due to the planned end of wearable profile support,
check-symbol is no longer needed in flutter-tizen.
flutter-tizen/flutter-tizen#526

In future version update will require integration with the patches below.
[Tizen] ci: Add missing action (#365)
[Tizen] Update action version and disable gtk config in test
[Tizen] Add CI related files