Removing Debian from list

Removing debian due to blob storage issues

Author: Tara Raj

WSL/install-manual.md

@@ -24,7 +24,6 @@ If the Windows Store app is not available, you can download and manually install
 * [Ubuntu 18.04](https://aka.ms/wsl-ubuntu-1804)
 * [Ubuntu 18.04 ARM](https://aka.ms/wsl-ubuntu-1804-arm)
 * [Ubuntu 16.04](https://aka.ms/wsl-ubuntu-1604)
-* [Debian GNU/Linux](https://aka.ms/wsl-debian-gnulinux)
 * [OpenSUSE](https://aka.ms/wsl-opensuse-42)
 * [SLES](https://aka.ms/wsl-sles-12)