scripts: west_commands: completion: Remove deprecated west.log

The global state west.log is deprecated, replace with WestCommand
logging.

Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be>

scripts/west_commands/completion.py

@@ -5,7 +5,6 @@
 import argparse
 import os
 
-from west import log
 from west.commands import WestCommand
 
 # Relative to the folder where this script lives
@@ -78,4 +77,4 @@ class Completion(WestCommand):
             with open(cf, 'r') as f:
                 print(f.read())
         except FileNotFoundError as e:
-            log.die('Unable to find completion file: {}'.format(e))
+            self.die('Unable to find completion file: {}'.format(e))