avoid using a method to grab the fake numpy namespace

Co-authored-by: Andreas Kloeckner <inform@tiker.net>

arraycontext/impl/pytato/__init__.py

@@ -55,15 +55,12 @@ class PytatoPyOpenCLArrayContext(ArrayContext):
         super().__init__()
         self.queue = queue
         self.allocator = allocator
-        self.np = self._get_fake_numpy_namespace()
+        from arraycontext.impl.pytato.fake_numpy import PytatoFakeNumpyNamespace
+        self.np = PytatoFakeNumpyNamespace(self)
 
         # unused, but necessary to keep the context alive
         self.context = self.queue.context
 
-    def _get_fake_numpy_namespace(self):
-        from arraycontext.impl.pytato.fake_numpy import PytatoFakeNumpyNamespace
-        return PytatoFakeNumpyNamespace(self)
-
     # {{{ ArrayContext interface
 
     def clone(self):