removed extra parameter

Project/Firebase/firestoreMock.go

@@ -86,7 +86,7 @@ func InitializeMockEnvironment() {
 
 // Returns the collection or subcollection, and a document id if it leads to a document
 func (db MockFS) checkForSubcollectionDoc(path string) (map[string]interface{}, string, error) {
-	collection, id, subCollection, subId, _, err := SplitPath(path)
+	collection, id, subCollection, subId, err := SplitPath(path)
 
 	if err != nil {
 		return nil, "", err