Remove object stage command group (#1373)

* Remove object stage command group

* Remove snapshots

---------

Co-authored-by: Patryk Czajka <patryk.czajka@snowflake.com>

RELEASE-NOTES.md

@@ -17,6 +17,7 @@
 # Unreleased version
 ## Backward incompatibility
 * Dropped support for Python below 3.10 version.
+* `snow object stage` commands are removed in favour of `snow stage`.
 
 ## Deprecations
 

src/snowflake/cli/app/commands_registration/builtin_plugins.py

@@ -19,11 +19,6 @@
 from snowflake.cli.plugins.nativeapp import plugin_spec as nativeapp_plugin_spec
 from snowflake.cli.plugins.notebook import plugin_spec as notebook_plugin_spec
 from snowflake.cli.plugins.object import plugin_spec as object_plugin_spec
-
-# TODO 3.0: remove this import
-from snowflake.cli.plugins.object_stage_deprecated import (
-    plugin_spec as object_stage_deprecated_plugin_spec,
-)
 from snowflake.cli.plugins.snowpark import plugin_spec as snowpark_plugin_spec
 from snowflake.cli.plugins.spcs import plugin_spec as spcs_plugin_spec
 from snowflake.cli.plugins.sql import plugin_spec as sql_plugin_spec
@@ -45,7 +40,6 @@ def get_builtin_plugin_name_to_plugin_spec():
         "streamlit": streamlit_plugin_spec,
         "git": git_plugin_spec,
         "notebook": notebook_plugin_spec,
-        "object-stage-deprecated": object_stage_deprecated_plugin_spec,
         "cortex": cortex_plugin_spec,
         "init": init_plugin_spec,
         "workspace": workspace_plugin_spec,