docs: Drop LFS

LFS was only needed for the blueprints documentation. That was removed
from the main repo so we can also drop the docs advertising this
dependecy in the main oniro repository.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

docs/oniro-quick-build.rst

@@ -45,7 +45,7 @@ by:
 
     $ sudo add-apt-repository ppa:ostc/ppa
     $ sudo apt-get update
-    $ sudo apt-get install git-repo git-lfs
+    $ sudo apt-get install git-repo
 
 Initialize a repo workspace and clone all required repositories:
 

docs/repo-workspace.rst

@@ -89,17 +89,6 @@ On OpenMandriva:
 OpenMandriva has already added |main_project_name| version of ``repo`` to its official
 repositories. If you're on OpenMandriva, simply ``dnf install repo``.
 
-Git LFS
-*******
-
-Some projects included in the repo configuration (manifests) use git LFS which
-means the associated package needs to be installed. Here is an example for
-**Ubuntu**:
-
-.. code-block:: console
-
-    $ sudo apt-get install git-lfs
-
 The Manifests
 *************