remove unused file

src/DotNetCore.CAP.Dashboard/IMonitoringApi.cs

-// Copyright (c) .NET Core Community. All rights reserved.
-// Licensed under the MIT License. See License.txt in the project root for license information.
-
-using System;
-using System.Collections.Generic;
-using DotNetCore.CAP.Dashboard.Monitoring;
-using DotNetCore.CAP.Messages;
-
-namespace DotNetCore.CAP.Dashboard
-{
-    public interface IMonitoringApi
-    {
-        StatisticsDto GetStatistics();
-
-        IList<MessageDto> Messages(MessageQueryDto queryDto);
-
-        int PublishedFailedCount();
-
-        int PublishedSucceededCount();
-
-        int ReceivedFailedCount();
-
-        int ReceivedSucceededCount();
-
-        IDictionary<DateTime, int> HourlySucceededJobs(MessageType type);
-
-        IDictionary<DateTime, int> HourlyFailedJobs(MessageType type);
-    }
-}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/Monitoring/MessageDto.cs

-// Copyright (c) .NET Core Community. All rights reserved.
-// Licensed under the MIT License. See License.txt in the project root for license information.
-
-using System;
-
-namespace DotNetCore.CAP.Dashboard.Monitoring
-{
-    public class MessageDto
-    {
-        public long Id { get; set; }
-
-        public string Version { get; set; }
-
-        public string Group { get; set; }
-
-        public string Name { get; set; }
-
-        public string Content { get; set; }
-
-        public DateTime Added { get; set; }
-
-        public DateTime? ExpiresAt { get; set; }
-
-        public int Retries { get; set; }
-
-        public string StatusName { get; set; }
-    }
-}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/Monitoring/MessageQueryDto.cs

-// Copyright (c) .NET Core Community. All rights reserved.
-// Licensed under the MIT License. See License.txt in the project root for license information.
-
-using DotNetCore.CAP.Messages;
-
-namespace DotNetCore.CAP.Dashboard.Monitoring
-{
-    public class MessageQueryDto
-    {
-        public MessageType MessageType { get; set; }
-
-        public string Group { get; set; }
-        public string Name { get; set; }
-
-        public string Content { get; set; }
-
-        public string StatusName { get; set; }
-
-        public int CurrentPage { get; set; }
-
-        public int PageSize { get; set; }
-    }
-}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/Monitoring/ServerDto.cs

-// Copyright (c) .NET Core Community. All rights reserved.
-// Licensed under the MIT License. See License.txt in the project root for license information.
-
-namespace DotNetCore.CAP.Dashboard.Monitoring
-{
-    public class SubscriberDto
-    {
-        public string Name { get; set; }
-
-        public string Method { get; set; }
-    }
-}
\ No newline at end of file

src/DotNetCore.CAP.Dashboard/Monitoring/StatisticsDto.cs

-// Copyright (c) .NET Core Community. All rights reserved.
-// Licensed under the MIT License. See License.txt in the project root for license information.
-
-namespace DotNetCore.CAP.Dashboard.Monitoring
-{
-    public class StatisticsDto
-    {
-        public int Servers { get; set; }
-
-        public int PublishedSucceeded { get; set; }
-        public int ReceivedSucceeded { get; set; }
-
-        public int PublishedFailed { get; set; }
-        public int ReceivedFailed { get; set; }
-    }
-}
\ No newline at end of file