Revert "project: print logs from the correct job"

This reverts commit 040dd57ad0.

Parallel updates are a great feature, but they break color.ui and
attempts to fix that have caused unexpected exceptions to be thrown on
Windows, so we need to back the feature out for now until we can get
it done in a way that works with both color and Windows.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>

src/west/app/project.py

@@ -859,7 +859,7 @@ class Update(_ProjectCommand):
 
     @staticmethod
     def _update_concurrent_thread(args):
-        index, project, self, logdir = args
+        project, self, logdir = args
         if logdir:
             saved_stdout = os.dup(sys.stdout.fileno())
             saved_stderr = os.dup(sys.stderr.fileno())
@@ -873,9 +873,9 @@ class Update(_ProjectCommand):
 
         try:
             self.update(project)
-            return (index, True)
+            return True
         except subprocess.CalledProcessError:
-            return (index, False)
+            return False
         finally:
             if logdir:
                 sys.stdout.flush()
@@ -903,12 +903,13 @@ class Update(_ProjectCommand):
             log.dbg(f"log directory: {logdir_name}")
 
         args = []
-        for index, project in enumerate(projects):
-            args.append((index, project, self, logdir_name))
+        for project in projects:
+            args.append((project, self, logdir_name))
 
         with multiprocessing.Pool(self.args.jobs) as p:
-            for index, successful in p.imap_unordered(
-                                     self._update_concurrent_thread, args):
+            for index, successful in enumerate(
+                    p.imap_unordered(self._update_concurrent_thread,
+                                     args)):
                 project = projects[index]
 
                 if logdir: