Revert "Feat/opentracing (#1243)"

This reverts commit 865520f.

Ocelot.sln

@@ -82,12 +82,6 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "basic", "basic", "{ED066001
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "graphql", "graphql", "{C15CD120-5F8D-41DE-9B21-00E3EA77D6C1}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Ocelot.Tracing.OpenTracing", "src\Ocelot.Tracing.OpenTracing\Ocelot.Tracing.OpenTracing.csproj", "{11C622AD-8C0A-4CF4-811B-3DBB76550797}"
-EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "open-tracing", "open-tracing", "{731C6A8A-69ED-445C-A132-C638AA93F9C7}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "OcelotOpenTracing", "samples\OcelotOpenTracing\OcelotOpenTracing.csproj", "{C9427E78-4281-4F59-A66E-17C0B66550E5}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -186,14 +180,6 @@ Global
 		{33BE6D88-F188-4E60-83AC-3C4B94D24675}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{33BE6D88-F188-4E60-83AC-3C4B94D24675}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{33BE6D88-F188-4E60-83AC-3C4B94D24675}.Release|Any CPU.Build.0 = Release|Any CPU
-		{11C622AD-8C0A-4CF4-811B-3DBB76550797}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{11C622AD-8C0A-4CF4-811B-3DBB76550797}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{11C622AD-8C0A-4CF4-811B-3DBB76550797}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{11C622AD-8C0A-4CF4-811B-3DBB76550797}.Release|Any CPU.Build.0 = Release|Any CPU
-		{C9427E78-4281-4F59-A66E-17C0B66550E5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{C9427E78-4281-4F59-A66E-17C0B66550E5}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{C9427E78-4281-4F59-A66E-17C0B66550E5}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{C9427E78-4281-4F59-A66E-17C0B66550E5}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -228,9 +214,6 @@ Global
 		{1F1F324D-6EA4-4E63-A6A7-C6053F412F1A} = {8FA0CBA0-0338-48EB-B37F-83CA5022237C}
 		{ED066001-BAF7-4117-9884-DF591A56347D} = {8FA0CBA0-0338-48EB-B37F-83CA5022237C}
 		{C15CD120-5F8D-41DE-9B21-00E3EA77D6C1} = {8FA0CBA0-0338-48EB-B37F-83CA5022237C}
-		{11C622AD-8C0A-4CF4-811B-3DBB76550797} = {5CFB79B7-C9DC-45A4-9A75-625D92471702}
-		{731C6A8A-69ED-445C-A132-C638AA93F9C7} = {8FA0CBA0-0338-48EB-B37F-83CA5022237C}
-		{C9427E78-4281-4F59-A66E-17C0B66550E5} = {731C6A8A-69ED-445C-A132-C638AA93F9C7}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {21476EFF-778A-4F97-8A56-D1AF1CEC0C48}

docs/features/tracing.rst

@@ -1,41 +1,8 @@
 Tracing
 =======
 
-This page details how to perform distributed tracing with Ocelot. 
-
-OpenTracing
-^^^^^^^^^^^
-
-Ocelot providers tracing functionality from the excellent `OpenTracing C# <https://github.com/opentracing/opentracing-csharp>`_ project. The code for the Ocelot integration
-can be found `here <https://github.com/ThreeMammals/Ocelot.Tracing.OpenTracing>`_.
-
-The example below uses `Jaeger C# <https://github.com/jaegertracing/jaeger-client-csharp>`_ client to provide the tracer used in Ocelot.
-
-.. code-block:: csharp
-
-    services.AddSingleton<ITracer>(sp =>
-    {
-        var loggerFactory = sp.GetService<ILoggerFactory>();
-        Configuration config = new Configuration(context.HostingEnvironment.ApplicationName, loggerFactory);
-
-        var tracer = config.GetTracer();
-        GlobalTracer.Register(tracer);
-        return tracer;
-    });
-
-    services
-        .AddOcelot()
-        .AddOpenTracing();
-
-Then in your ocelot.json add the following to the Route you want to trace..
-
-.. code-block:: json
-
-      "HttpHandlerOptions": {
-            "UseTracing": true
-        },
-
-Ocelot will now send tracing information to Jaeger when this Route is called.
+This page details how to perform distributed tracing with Ocelot. At the moment we only support Butterfly but other tracers might just work without
+anything Ocelot specific.
 
 Butterfly
 ^^^^^^^^^