To remove both the SDK and its associated toolchain version, use the top-level uninstall subcommand. For example, the following command removes both the SDK and toolchain v2.7.0 bundles:
nrfutil sdk-manager uninstall v2.8.0
You get the following output when the process completes:
[00:00:00] ###### 100% [Remove version] Removed version v2.8.0
[00:00:16] ###### 100% [Remove toolchain] Removed toolchain at C:\ncs\toolchains\15b490767d
If the toolchain version is used by other SDKs, the toolchain is not removed by this command. An example could be the toolchain bundles for the nRF Connect SDK patch versions, which are the same as the toolchain bundles used for the major or minor releases.