[release] remove docs/nightly directory

The directory was removed from the master, and
the directory deletion commit was lost during merge.

Change-Id: I484221cb1bf7308d7330a078fe24b8c6a25d4fc2
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/245482
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
diff --git a/docs/nightly/CHANGELOG.md b/docs/nightly/CHANGELOG.md
deleted file mode 100644
index f93a946..0000000
--- a/docs/nightly/CHANGELOG.md
+++ /dev/null
@@ -1,4 +0,0 @@
-## 2020.3.x
-* Set the extension name for VS Code Go Nightly(`go-nightly`).
-* Pick up the pre-release version of `gopls` if available.
-* Disabled the telemetry report for VS Code Go.
diff --git a/docs/nightly/README.md b/docs/nightly/README.md
deleted file mode 100644
index 13a0c43..0000000
--- a/docs/nightly/README.md
+++ /dev/null
@@ -1,14 +0,0 @@
-# Go Nightly for VS Code
-
-> ### **ATTENTION: This is the *preview* version of the [VS Code Go extension](https://github.com/golang/vscode-go), used for early feedback and testing.**
-> It is published nightly and contains previews of new features and bug fixes that are still under review or test. Therefore, this extension can be broken or unstable at times. If you are looking for the stable version,
-please install [the default VS Code Go extension](https://marketplace.visualstudio.com/items?itemName=golang.go) instead.
->
-> **NOTE: The stable Go extension (`golang.go`) cannot be used at the same time as the preview Go Nightly extension (`golang.go-nightly`)**. If you have installed both extensions, you **must disable or uninstall** one of them. For further guidance, read the [documentation on how to disable an extension](https://code.visualstudio.com/docs/editor/extension-gallery#_disable-an-extension).
-
-> ### **Differences between Go and Go Nightly**
->
-> * Go Nightly is released more frequently than the stable version (once per weekday).
-> * Go Nightly includes features and bug fixes that are not yet finalized.
-> * Go Nightly may use pre-release versions of tools (such as `gopls`) instead of released versions.
-> * For more information about Go Nightly, read the [Go Nightly](../nightly.md) documentation.