CSHARP-4095: Updated Atlas Data Lake spec tests that were missed.

Author: JamesKovacs

tests/MongoDB.Driver.Tests/Specifications/atlas-data-lake/tests/estimatedDocumentCount.json

@@ -15,24 +15,9 @@
         {
           "command_started_event": {
             "command": {
-              "aggregate": "driverdata",
-              "pipeline": [
-                {
-                  "$collStats": {
-                    "count": {}
-                  }
-                },
-                {
-                  "$group": {
-                    "_id": 1,
-                    "n": {
-                      "$sum": "$count"
-                    }
-                  }
-                }
-              ]
+              "count": "driverdata"
             },
-            "command_name": "aggregate",
+            "command_name": "count",
             "database_name": "test"
           }
         }

tests/MongoDB.Driver.Tests/Specifications/atlas-data-lake/tests/estimatedDocumentCount.yml

@@ -13,9 +13,6 @@ tests:
       -
         command_started_event:
           command:
-            aggregate: *collection_name
-            pipeline:
-              - $collStats: { count: {} }
-              - $group: { _id: 1, n: { $sum: $count }}
-          command_name: aggregate
+            count: *collection_name
+          command_name: count
           database_name: *database_name