Fix traits that belong on test classes.

Author: benrr101

src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/ConnectionPoolTest/ConnectionPoolTest.cs

@@ -12,11 +12,10 @@
 
 namespace Microsoft.Data.SqlClient.ManualTesting.Tests
 {
-    [Trait("Set", "3")]
     public class ConnectionPoolConnectionStringProvider : IEnumerable<object[]>
     {
         private static readonly string _TCPConnectionString = new SqlConnectionStringBuilder(DataTestUtility.TCPConnectionString) {
-            MultipleActiveResultSets = false, 
+            MultipleActiveResultSets = false,
             Pooling = true}.ConnectionString;
         private static readonly string _tcpMarsConnStr = new SqlConnectionStringBuilder(DataTestUtility.TCPConnectionString) {
             MultipleActiveResultSets = true,
@@ -58,6 +57,7 @@ public IEnumerator<object[]> GetEnumerator()
     }
 
     // TODO Synapse: Fix these tests for Azure Synapse.
+    [Trait("Set", "3")]
     public static class ConnectionPoolTest
     {
         /// <summary>

src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/VectorTest/NativeVectorFloat32Tests.cs

@@ -14,7 +14,6 @@
 
 namespace Microsoft.Data.SqlClient.ManualTesting.Tests.SQL.VectorTest
 {
-    [Trait("Set", "3")]
     public static class VectorFloat32TestData
     {
         public const int VectorHeaderSize = 8;
@@ -54,6 +53,7 @@ public static IEnumerable<object[]> GetVectorFloat32TestData()
         }
     }
 
+    [Trait("Set", "3")]
     public sealed class NativeVectorFloat32Tests : IDisposable
     {
         private readonly ITestOutputHelper _output;