CSHARP-1515: Remove unnecessary classes.

Author: rstam

src/MongoDB.Driver.Legacy/AggregateEnumerable.cs

@@ -18,7 +18,6 @@
 using System.Threading;
 using MongoDB.Bson;
 using MongoDB.Driver.Core.Operations;
-using MongoDB.Driver.Sync;
 
 namespace MongoDB.Driver
 {
@@ -44,8 +43,7 @@ public AggregateEnumerable(MongoCollection collection, IReadOperation<IAsyncCurs
         public IEnumerator<BsonDocument> GetEnumerator()
         {
             var cursor = _collection.ExecuteReadOperation(_operation, _readPreference);
-            var adapter = new AsyncCursorEnumeratorAdapter<BsonDocument>(cursor, CancellationToken.None);
-            return adapter.GetEnumerator();
+            return cursor.ToEnumerable().GetEnumerator();
         }
 
         IEnumerator IEnumerable.GetEnumerator()

src/MongoDB.Driver.Legacy/Communication/MongoServerInstance.cs

@@ -26,7 +26,6 @@
 using MongoDB.Driver.Core.Operations;
 using MongoDB.Driver.Core.Servers;
 using MongoDB.Driver.Core.WireProtocol.Messages.Encoders;
-using MongoDB.Driver.Sync;
 
 namespace MongoDB.Driver
 {

src/MongoDB.Driver.Legacy/MongoCollection.cs

@@ -30,7 +30,6 @@
 using MongoDB.Driver.Core.Operations;
 using MongoDB.Driver.Core.WireProtocol.Messages.Encoders;
 using MongoDB.Driver.Operations;
-using MongoDB.Driver.Sync;
 using MongoDB.Driver.Wrappers;
 
 namespace MongoDB.Driver
@@ -1589,7 +1588,7 @@ public ReadOnlyCollection<IEnumerator<TDocument>> ParallelScanAs<TDocument>(Para
             };
 
             var cursors = ExecuteReadOperation(operation, args.ReadPreference);
-            var documentEnumerators = cursors.Select(c => new AsyncCursorEnumeratorAdapter<TDocument>(c, CancellationToken.None).GetEnumerator()).ToList();
+            var documentEnumerators = cursors.Select(c => c.ToEnumerable().GetEnumerator()).ToList();
             return new ReadOnlyCollection<IEnumerator<TDocument>>(documentEnumerators);
         }
 

src/MongoDB.Driver.Legacy/MongoCursor.cs

@@ -25,7 +25,6 @@
 using MongoDB.Driver.Core.Clusters;
 using MongoDB.Driver.Core.Misc;
 using MongoDB.Driver.Core.Operations;
-using MongoDB.Driver.Sync;
 
 namespace MongoDB.Driver
 {
@@ -840,7 +839,7 @@ public virtual IEnumerator<TDocument> GetEnumerator()
             using (var binding = Server.GetReadBinding(ReadPreference))
             {
                 var cursor = operation.Execute(binding, CancellationToken.None);
-                return new AsyncCursorEnumeratorAdapter<TDocument>(cursor, CancellationToken.None).GetEnumerator();
+                return cursor.ToEnumerable().GetEnumerator();
             }
         }
 

src/MongoDB.Driver.Legacy/MongoDatabase.cs

@@ -27,7 +27,6 @@
 using MongoDB.Driver.Core.WireProtocol.Messages.Encoders;
 using MongoDB.Driver.GridFS;
 using MongoDB.Driver.Operations;
-using MongoDB.Driver.Sync;
 
 namespace MongoDB.Driver
 {

src/MongoDB.Driver.Legacy/MongoServer.cs

@@ -31,7 +31,6 @@
 using MongoDB.Driver.Core.Servers;
 using MongoDB.Driver.Core.WireProtocol.Messages.Encoders;
 using MongoDB.Driver.Support;
-using MongoDB.Driver.Sync;
 
 namespace MongoDB.Driver
 {

src/MongoDB.Driver.Legacy/Operations/BulkWriteOperation.cs

@@ -21,7 +21,6 @@
 using MongoDB.Bson.Serialization;
 using MongoDB.Bson.Serialization.Serializers;
 using MongoDB.Driver.Core.Operations;
-using MongoDB.Driver.Sync;
 
 namespace MongoDB.Driver
 {

src/MongoDB.Driver/Linq/AggregateQueryableExecutionModel.cs

@@ -22,7 +22,6 @@
 using MongoDB.Bson;
 using MongoDB.Bson.Serialization;
 using MongoDB.Driver.Core.Misc;
-using MongoDB.Driver.Sync;
 
 namespace MongoDB.Driver.Linq
 {

src/MongoDB.Driver/MongoDB.Driver.csproj

@@ -276,8 +276,6 @@
     <Compile Include="FindFluentBase.cs" />
     <Compile Include="Command.cs" />
     <Compile Include="Support\ReflectionExtensions.cs" />
-    <Compile Include="Sync\AsyncCursorEnumerableAdapter.cs" />
-    <Compile Include="Sync\AsyncCursorEnumeratorAdapter.cs" />
     <Compile Include="AggregateUnwindOptions.cs" />
     <Compile Include="TextSearchOptions.cs" />
     <Compile Include="UpdateDefinitionBuilder.cs" />