craft-application migration cleanup: pack command (#1704)

This pack command existed for comparison with the new one, but is no
longer necessary. It got missed when I was removing some other
no-longer-used commands.

charmcraft/application/commands/lifecycle.py

@@ -19,7 +19,7 @@
 import pathlib
 import sys
 import textwrap
-from typing import TYPE_CHECKING, cast
+from typing import TYPE_CHECKING, Any, cast
 
 import craft_cli
 from craft_application.commands import lifecycle
@@ -174,3 +174,12 @@ def run_managed(self, parsed_args: argparse.Namespace) -> bool:
         if sys.platform == "linux" and charmcraft_yaml and charmcraft_yaml.get("type") == "bundle":
             return False
         return super().run_managed(parsed_args)
+
+    def _run(
+        self,
+        parsed_args: argparse.Namespace,
+        step_name: str | None = None,
+        **kwargs: Any,  # noqa: ANN401 (allow dynamic typing)
+    ) -> None:
+        self._validate_args(parsed_args)
+        return super()._run(parsed_args, step_name, **kwargs)

charmcraft/main.py

@@ -33,7 +33,7 @@
 )
 
 from charmcraft import config, const, env, utils
-from charmcraft.commands import pack, store, version
+from charmcraft.commands import store, version
 from charmcraft.parts import setup_parts
 
 # set up all the libs' loggers in DEBUG level so their content is grabbed by craft-cli's Emitter
@@ -57,7 +57,6 @@
 # central place and not distributed in several classes/files. Also note that order here is
 # important when listing commands and showing help.
 _basic_commands = [
-    pack.PackCommand,
     version.VersionCommand,
 ]
 _charmhub_commands = [