add PermissionDefinitionContext RemoveGroup Method

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/IPermissionDefinitionContext.cs

@@ -9,5 +9,7 @@ namespace Volo.Abp.Authorization.Permissions
         PermissionGroupDefinition GetGroupOrNull(string name);
 
         PermissionGroupDefinition AddGroup([NotNull] string name, ILocalizableString displayName = null);
+
+        void RemoveGroup(string name);
     }
 }

framework/src/Volo.Abp.Authorization/Volo/Abp/Authorization/Permissions/PermissionDefinitionContext.cs

@@ -36,5 +36,16 @@ namespace Volo.Abp.Authorization.Permissions
             return Groups[name];
         }
 
+        public virtual void RemoveGroup(string name)
+        {
+            Check.NotNull(name, nameof(name));
+
+            if (!Groups.ContainsKey(name))
+            {
+                throw new AbpException($"Not found permission group with name: {name}");
+            }
+
+            Groups.Remove(name);
+        }
     }
 }

framework/test/Volo.Abp.Authorization.Tests/Volo/Abp/Authorization/Authorization_Tests.cs

@@ -50,7 +50,7 @@ namespace Volo.Abp.Authorization
         [Fact]
         public void Should_Permission_Definition_GetGroup()
         {
-            _permissionDefinitionManager.GetGroups().Count.ShouldBe(2);
+            _permissionDefinitionManager.GetGroups().Count.ShouldBe(1);
         }
     }
 }

framework/test/Volo.Abp.Authorization.Tests/Volo/Abp/Authorization/TestServices/AuthorizationTestPermissionDefinitionProvider.cs

@@ -13,6 +13,8 @@ namespace Volo.Abp.Authorization.TestServices
             }
             PermissionGroupDefinition group = context.AddGroup("TestGroup");
             group.AddPermission("MyAuthorizedService1");
+
+            context.RemoveGroup("TestGetGroup");
         }
     }
 }