op-mode: T7648: fix pylint errors in storage module

************* Module storage
src/op_mode/storage.py:32:11: E0602: Undefined variable '_get_system_storage' (undefined-variable)
src/op_mode/storage.py:52:11: E0602: Undefined variable 'output' (undefined-variable)

1 files changed, 1 insertions, 7 deletions

diff --git a/src/op_mode/storage.py b/src/op_mode/storage.py
index 7e869e9d9..0f3fabe32 100755
--- a/src/op_mode/storage.py
+++ b/src/op_mode/storage.py
@@ -13,10 +13,8 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
 
 import sys
-
 import vyos.opmode
 
 from jinja2 import Template
@@ -28,9 +26,6 @@ Used:       {{used}} ({{use_percentage}}%)
 Available:  {{avail}} ({{avail_percentage}}%)
 """
 
-def _get_formatted_output():
-    return _get_system_storage()
-
 def show(raw: bool):
     from vyos.utils.disk import get_persistent_storage_stats
 
@@ -49,7 +44,7 @@ def show(raw: bool):
             tmpl = Template(output_tmpl)
             return tmpl.render(data).strip()
 
-    return output
+    return None
 
 if __name__ == '__main__':
     try:
@@ -59,4 +54,3 @@ if __name__ == '__main__':
     except (ValueError, vyos.opmode.Error) as e:
         print(e)
         sys.exit(1)
-