[Delete] Remove meaningless casting computed property.

Author: SHcommit

Sources/SHFirestoreService/FirestoreAccessible.swift

@@ -14,15 +14,4 @@ public protocol FirestoreAccessible {
   var collectionRef: CollectionReference { get }
   var documentRef: DocumentReference? { get }
 }
-
-// MARK: - Helpers
-public extension FirestoreAccessible {
-  var asCollectionRef: CollectionReference? {
-    return self as? CollectionReference
-  }
-  
-  var asDocumentRef: DocumentReference? {
-    return self as? DocumentReference
-  }
-}
 #endif

Sources/SHFirestoreService/FirestoreService.swift

@@ -443,11 +443,8 @@ extension FirestoreService: FirestoreDocumentSupportable {
     makeQuery: @escaping QueryHandler
   ) -> AnyPublisher<Bool, FirestoreServiceError> {
     return Future<Bool, FirestoreServiceError> { promise in
-      guard let collectionRef = endpoint.requestType.asCollectionRef else {
-        promise(.failure(.collectionNotFound))
-        return
-      }
       do {
+        let collectionRef = endpoint.requestType.collectionRef
         let query = try makeQuery(collectionRef)
         query.getDocuments { querySnapshot, error in
           if let error = error {