fix style issues

src/azure-cli/azure/cli/command_modules/network/__init__.py

@@ -4,7 +4,6 @@
 # --------------------------------------------------------------------------------------------
 
 from azure.cli.core import AzCommandsLoader
-from azure.cli.core.profiles import ResourceType
 
 import azure.cli.command_modules.network._help  # pylint: disable=unused-import
 
@@ -51,5 +50,5 @@ def load_arguments(self, command):
         load_arguments(self, command)
 
 
-def get_command_loader(cli_ctx):
+def get_command_loader(_):
     return NetworkCommandsLoader

src/azure-cli/azure/cli/command_modules/storage/__init__.py

@@ -370,5 +370,5 @@ def new_handler(ex):
     kwargs['exception_handler'] = new_handler
 
 
-def get_command_loader(cli_ctx):
+def get_command_loader(_):
     return StorageCommandsLoader

src/azure-cli/azure/cli/command_modules/vm/__init__.py

@@ -64,5 +64,6 @@ def load_arguments(self, command):
         except ImportError:
             pass
 
-def get_command_loader(cli_ctx):
+
+def get_command_loader(_):
     return ComputeCommandsLoader