Remove workaround for dotnet/core-setup#4978

Author: dsplaisted

src/Tasks/Microsoft.NET.Build.Tasks/DependencyContextBuilder.cs

@@ -362,18 +362,17 @@ private IEnumerable<RuntimeLibrary> GetRuntimePackLibraries(IEnumerable<RuntimeP
             return runtimePackAssets.GroupBy(asset => asset.PackageName + "/" + asset.PackageVersion).Select(
                 runtimePackAssetGroup =>
                 {
-                    //  Prefix paths with "./" to workaround https://github.com/dotnet/core-setup/issues/4978
                     List<RuntimeAssetGroup> runtimeAssemblyGroups = new List<RuntimeAssetGroup>()
                     {
                         new RuntimeAssetGroup(string.Empty,
                             runtimePackAssetGroup.Where(asset => asset.AssetType == AssetType.Runtime)
-                            .Select(asset => CreateRuntimeFile("./" + asset.DestinationSubPath, asset.SourcePath)))
+                            .Select(asset => CreateRuntimeFile(asset.DestinationSubPath, asset.SourcePath)))
                     };
                     List<RuntimeAssetGroup> nativeLibraryGroups = new List<RuntimeAssetGroup>()
                     {
                         new RuntimeAssetGroup(string.Empty,
                             runtimePackAssetGroup.Where(asset => asset.AssetType == AssetType.Native)
-                            .Select(asset => CreateRuntimeFile($"./" + asset.DestinationSubPath, asset.SourcePath)))
+                            .Select(asset => CreateRuntimeFile(asset.DestinationSubPath, asset.SourcePath)))
                     };
 
                     return new RuntimeLibrary("runtimepack",