remove IFrameMetaData and frame properties from ImageMataData

src/ImageSharp/Formats/Gif/GifEncoderCore.cs

@@ -287,7 +287,7 @@ namespace SixLabors.ImageSharp.Formats.Gif
         /// <param name="metaData">The metadata of the image or frame.</param>
         /// <param name="writer">The stream to write to.</param>
         /// <param name="transparencyIndex">The index of the color in the color palette to make transparent.</param>
-        private void WriteGraphicalControlExtension(IFrameMetaData metaData, EndianBinaryWriter writer, int transparencyIndex)
+        private void WriteGraphicalControlExtension(ImageFrameMetaData metaData, EndianBinaryWriter writer, int transparencyIndex)
         {
             var extension = new GifGraphicsControlExtension
             {

src/ImageSharp/MetaData/IFrameMetaData.cs

@@ -1,29 +0,0 @@
-// Copyright (c) Six Labors and contributors.
-// Licensed under the Apache License, Version 2.0.
-
-using SixLabors.ImageSharp.Formats;
-using SixLabors.ImageSharp.Formats.Gif;
-
-namespace SixLabors.ImageSharp.MetaData
-{
-    /// <summary>
-    /// Encapsulates the metadata of an image frame.
-    /// </summary>
-    internal interface IFrameMetaData
-    {
-        /// <summary>
-        /// Gets or sets the frame delay for animated images.
-        /// If not 0, when utilized in Gif animation, this field specifies the number of hundredths (1/100) of a second to
-        /// wait before continuing with the processing of the Data Stream.
-        /// The clock starts ticking immediately after the graphic is rendered.
-        /// </summary>
-        int FrameDelay { get; set; }
-
-        /// <summary>
-        /// Gets or sets the disposal method for animated images.
-        /// Primarily used in Gif animation, this field indicates the way in which the graphic is to
-        /// be treated after being displayed.
-        /// </summary>
-        DisposalMethod DisposalMethod { get; set; }
-    }
-}

src/ImageSharp/MetaData/ImageFrameMetaData.cs

@@ -9,7 +9,7 @@ namespace SixLabors.ImageSharp.MetaData
     /// <summary>
     /// Encapsulates the metadata of an image frame.
     /// </summary>
-    public sealed class ImageFrameMetaData : IFrameMetaData
+    public sealed class ImageFrameMetaData
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="ImageFrameMetaData"/> class.
@@ -33,10 +33,19 @@ namespace SixLabors.ImageSharp.MetaData
             this.DisposalMethod = other.DisposalMethod;
         }
 
-        /// <inheritdoc/>
+        /// <summary>
+        /// Gets or sets the frame delay for animated images.
+        /// If not 0, when utilized in Gif animation, this field specifies the number of hundredths (1/100) of a second to
+        /// wait before continuing with the processing of the Data Stream.
+        /// The clock starts ticking immediately after the graphic is rendered.
+        /// </summary>
         public int FrameDelay { get; set; }
 
-        /// <inheritdoc/>
+        /// <summary>
+        /// Gets or sets the disposal method for animated images.
+        /// Primarily used in Gif animation, this field indicates the way in which the graphic is to
+        /// be treated after being displayed.
+        /// </summary>
         public DisposalMethod DisposalMethod { get; set; }
 
         /// <summary>

src/ImageSharp/MetaData/ImageMetaData.cs

@@ -12,7 +12,7 @@ namespace SixLabors.ImageSharp.MetaData
     /// <summary>
     /// Encapsulates the metadata of an image.
     /// </summary>
-    public sealed class ImageMetaData : IFrameMetaData
+    public sealed class ImageMetaData
     {
         /// <summary>
         /// The default horizontal resolution value (dots per inch) in x direction.
@@ -51,8 +51,6 @@ namespace SixLabors.ImageSharp.MetaData
 
             this.HorizontalResolution = other.HorizontalResolution;
             this.VerticalResolution = other.VerticalResolution;
-            this.FrameDelay = other.FrameDelay;
-            this.DisposalMethod = other.DisposalMethod;
             this.RepeatCount = other.RepeatCount;
 
             foreach (ImageProperty property in other.Properties)
@@ -115,12 +113,6 @@ namespace SixLabors.ImageSharp.MetaData
         /// </summary>
         public IccProfile IccProfile { get; set; }
 
-        /// <inheritdoc/>
-        public int FrameDelay { get; set; }
-
-        /// <inheritdoc/>
-        public DisposalMethod DisposalMethod { get; set; }
-
         /// <summary>
         /// Gets the list of properties for storing meta information about this image.
         /// </summary>