Remove unused namespaces and set root namespace

modules/tenant-management/test/Volo.Abp.TenantManagement.Domain.Tests/Volo.Abp.TenantManagement.Domain.Tests.csproj

@@ -2,8 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>netcoreapp2.2</TargetFramework>
-
-    <IsPackable>false</IsPackable>
+    <RootNamespace />
   </PropertyGroup>
 
   <ItemGroup>

modules/tenant-management/test/Volo.Abp.TenantManagement.Domain.Tests/Volo/Abp/TenantManagement/AbpTenantManagementDomainTestModule.cs

@@ -1,7 +1,5 @@
-using System;
 using Volo.Abp.Modularity;
 using Volo.Abp.TenantManagement.EntityFrameworkCore;
-using Xunit;
 
 namespace Volo.Abp.TenantManagement
 {

modules/tenant-management/test/Volo.Abp.TenantManagement.Domain.Tests/Volo/Abp/TenantManagement/TenantConnectionString_Tests.cs

@@ -1,6 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Text;
 using System.Threading.Tasks;
 using Shouldly;
 using Xunit;

modules/tenant-management/test/Volo.Abp.TenantManagement.Domain.Tests/Volo/Abp/TenantManagement/TenantManager_Tests.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using Shouldly;
 using Xunit;
 

modules/tenant-management/test/Volo.Abp.TenantManagement.Domain.Tests/Volo/Abp/TenantManagement/TenantStore_Tests.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using Shouldly;
 using Volo.Abp.MultiTenancy;
 using Xunit;

modules/tenant-management/test/Volo.Abp.TenantManagement.Domain.Tests/Volo/Abp/TenantManagement/Tenant_Tests.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Threading.Tasks;
+using System.Threading.Tasks;
 using Shouldly;
 using Xunit;