Change ioc setting to Singleton for LiteDbProvider

Back/skydiveLogs-api.Data/DropZoneRepository.cs

@@ -19,18 +19,12 @@ namespace skydiveLogs_api.Data
 
         public IEnumerable<DropZone> GetAll()
         {
-            var results = _col.FindAll().ToList();
-            _dataProvider.Close();
-
-            return results;
+            return _col.FindAll().ToList();
         }
 
         public DropZone GetById(int id)
         {
-            var result = _col.FindById(new BsonValue(id));
-            _dataProvider.Close();
-
-            return result;
+            return _col.FindById(new BsonValue(id));
         }
 
         private readonly IDataProvider _dataProvider;