Remove unnecessary AAZ command loading from __init__.py

The az aks safeguards commands are already available in the official CLI.
The aks-preview extension overrides them through custom commands in commands.py.
No need to explicitly load AAZ commands here.

Author: ShantingLiu

src/aks-preview/azext_aks_preview/__init__.py

@@ -36,17 +36,6 @@ def __init__(self, cli_ctx=None):
     def load_command_table(self, args):
         super().load_command_table(args)
         from azext_aks_preview.commands import load_command_table
-        from azure.cli.core.aaz import load_aaz_command_table
-        try:
-            from . import aaz
-        except ImportError:
-            aaz = None
-        if aaz:
-            load_aaz_command_table(
-                loader=self,
-                aaz_pkg_name=aaz.__name__,
-                args=args
-            )
         load_command_table(self, args)
         return self.command_table