fix: remove empty if statement (RUF072)

Author: alexfikl

arraycontext/impl/pytato/__init__.py

@@ -52,7 +52,6 @@
 """
 
 import abc
-import sys
 from dataclasses import dataclass
 from typing import TYPE_CHECKING, Any, cast
 
@@ -98,9 +97,6 @@
 
     from arraycontext.container import SerializationKey
 
-if getattr(sys, "_BUILDING_SPHINX_DOCS", False):
-    pass
-
 import logging