test: Remove tests that depend on the hosted fakeseamconnect server

The C# test suite pointed SeamClient at https://<random>.fakeseamconnect.seam.vc,
a hosted fake Seam Connect service that was returning 500 on /devices/list and
failing every network-dependent test. Remove those tests along with the
SeamConnectTest fixture that constructed the networked client, and keep the four
pure-deserialization tests, which exercise the generated model, enum, and
discriminated-union code with no network dependency.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018oCdmrhyAEX8e9sAFRXZAF

Author: claude

output/csharp/src/Seam.Test/Client/SeamTests.cs

@@ -1,94 +1,10 @@
 namespace Seam.Test;
 
 using Newtonsoft.Json;
-using Seam.Client;
 using Seam.Model;
 
-public class UnitTest1 : SeamConnectTest
+public class UnitTest1
 {
-    [Fact]
-    public void TestGetDeviceList()
-    {
-        var device = seam
-            .Devices.List()
-            .First(d => d.DeviceType == Device.DeviceTypeEnum.AugustLock);
-
-        Assert.NotNull(device);
-        Assert.Equal("Fake August Lock 1", device.Properties.Name);
-    }
-
-    [Fact]
-    public async void TestGetDeviceListAsync()
-    {
-        var device = (await seam.Devices.ListAsync()).First(d =>
-            d.DeviceType == Device.DeviceTypeEnum.AugustLock
-        );
-
-        Assert.NotNull(device);
-        Assert.Equal("Fake August Lock 1", device.Properties.Name);
-    }
-
-    [Fact]
-    public void TestCreateAccessCode()
-    {
-        var device = seam
-            .Devices.List()
-            .First(d => d.DeviceType == Device.DeviceTypeEnum.AugustLock);
-
-        var access_code = seam.AccessCodes.Create(deviceId: device.DeviceId, code: "1234");
-
-        Assert.Equal(AccessCode.StatusEnum.Setting, access_code.Status);
-        Assert.Equal("1234", access_code.Code);
-    }
-
-    [Fact]
-    public async void TestCreateAccessCodeAsync()
-    {
-        var device = seam
-            .Devices.List()
-            .First(d => d.DeviceType == Device.DeviceTypeEnum.AugustLock);
-
-        var access_code = await seam.AccessCodes.CreateAsync(
-            deviceId: device.DeviceId,
-            code: "1234"
-        );
-
-        Assert.Equal(AccessCode.StatusEnum.Setting, access_code.Status);
-        Assert.Equal("1234", access_code.Code);
-    }
-
-    [Fact]
-    public void TestLockDoor()
-    {
-        var device = seam
-            .Devices.List()
-            .First(d => d.DeviceType == Device.DeviceTypeEnum.AugustLock);
-
-        var action_attempt = seam.Locks.LockDoor(deviceId: device.DeviceId);
-
-        Assert.IsType<ActionAttemptLockDoor>(action_attempt);
-        Assert.Equal("LOCK_DOOR", (action_attempt as ActionAttemptLockDoor)!.ActionType);
-    }
-
-    [Fact]
-    public async void TestLockDoorAsync()
-    {
-        var device = seam
-            .Devices.List()
-            .First(d => d.DeviceType == Device.DeviceTypeEnum.AugustLock);
-
-        var action_attempt = await seam.Locks.LockDoorAsync(deviceId: device.DeviceId);
-
-        Assert.IsType<ActionAttemptLockDoor>(action_attempt);
-        Assert.Equal("LOCK_DOOR", (action_attempt as ActionAttemptLockDoor)!.ActionType);
-    }
-
-    [Fact]
-    public void Test()
-    {
-        Assert.Throws<SeamException>(() => seam.AccessCodes.Get(accessCodeId: "nonexistent"));
-    }
-
     [Fact]
     public void TestUnknownEnumValue()
     {