doc: uninstalling orchestrion (#505)

Signed-off-by: Eliott Bouhana <eliott.bouhana@datadoghq.com>

_docs/content/docs/uninstalling.md

@@ -0,0 +1,22 @@
+---
+title: "Uninstall"
+weight: 999
+
+prev: /troubleshooting
+---
+
+## Removing Orchestrion
+
+Removing Orchestrion from your project is a simple process to go back to the original state of your project before you
+started using Orchestrion.
+
+The steps can be summed up as:
+* Remove any files created by orchestrion like `orchestrion.tool.go` and `orchestrion.yml`.
+* Run `go mod tidy` to remove any references to orchestrion in your `go.mod` file.
+* Remove directives from your source code if any like `//orchestrion:ignore` or `//dd:span`
+* Remove any references to orchestrion in your build scripts or CI/CD pipelines or Dockerfile
+
+{{<callout type="info">}}
+You can confirm that orchestrion has been removed correctly by looking at your application logs and checking
+if they still contain the DataDog Tracer startup log starting with `DATADOG TRACER CONFIGURATION`.
+{{</callout>}}