[PATCH] test: address some pylint warnings

[Heinrich Schuchardt]

* remove unused variables
* module description must precede import statements
* fix inconsistent return values

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 test/py/tests/test_efi_loader.py   | 10 +++++-----
 test/py/tests/test_efi_selftest.py |  6 ++----
 2 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/test/py/tests/test_efi_loader.py b/test/py/tests/test_efi_loader.py
index fc8d6b8655..85473a9049 100644
--- a/test/py/tests/test_efi_loader.py
+++ b/test/py/tests/test_efi_loader.py
@@ -6,9 +6,6 @@
 
 # Test efi loader implementation
 
-import pytest
-import u_boot_utils
-
 """
 Note: This test relies on boardenv_* containing configuration values to define
 which network environment is available for testing. Without this, the parts
@@ -50,6 +47,9 @@ env__efi_loader_helloworld_file = {
 }
 """
 
+import pytest
+import u_boot_utils
+
 net_set_up = False
 
 def test_efi_pre_commands(u_boot_console):
@@ -80,7 +80,7 @@ def test_efi_setup_dhcp(u_boot_console):
         env_vars = u_boot_console.config.env.get('env__net_static_env_vars', None)
         if not env_vars:
             pytest.skip('No DHCP server available')
-        return None
+        return
 
     u_boot_console.run_command('setenv autoload no')
     output = u_boot_console.run_command('dhcp')
@@ -193,7 +193,7 @@ def test_efi_grub_net(u_boot_console):
     check_smbios = u_boot_console.config.env.get('env__efi_loader_check_smbios', False)
     if check_smbios:
         u_boot_console.wait_for('grub>')
-        output = u_boot_console.run_command('lsefisystab', wait_for_prompt=False, wait_for_echo=False)
+        u_boot_console.run_command('lsefisystab', wait_for_prompt=False, wait_for_echo=False)
         u_boot_console.wait_for('SMBIOS')
 
     # Then exit cleanly
diff --git a/test/py/tests/test_efi_selftest.py b/test/py/tests/test_efi_selftest.py
index 63218efbc2..0161a6ea24 100644
--- a/test/py/tests/test_efi_selftest.py
+++ b/test/py/tests/test_efi_selftest.py
@@ -73,8 +73,7 @@ def test_efi_selftest_text_input(u_boot_console):
     This function calls the text input EFI selftest.
     """
     u_boot_console.run_command(cmd='setenv efi_selftest text input')
-    output = u_boot_console.run_command(cmd='bootefi selftest',
-                                        wait_for_prompt=False)
+    u_boot_console.run_command(cmd='bootefi selftest', wait_for_prompt=False)
     m = u_boot_console.p.expect([r'To terminate type \'x\''])
     if m != 0:
         raise Exception('No prompt for \'text input\' test')
@@ -143,8 +142,7 @@ def test_efi_selftest_text_input_ex(u_boot_console):
     This function calls the extended text input EFI selftest.
     """
     u_boot_console.run_command(cmd='setenv efi_selftest extended text input')
-    output = u_boot_console.run_command(cmd='bootefi selftest',
-                                        wait_for_prompt=False)
+    u_boot_console.run_command(cmd='bootefi selftest', wait_for_prompt=False)
     m = u_boot_console.p.expect([r'To terminate type \'CTRL\+x\''])
     if m != 0:
         raise Exception('No prompt for \'text input\' test')
-- 
2.32.0