clean up _internal

Author: zpcore

torch_xla/_internal/utils.py

@@ -6,16 +6,3 @@ def parse_xla_device(device: str):
   m = re.match(r'([A-Z]+):(\d+)$', device)
   if m:
     return (m.group(1), int(m.group(2)))
-
-
-def run_once(func):
-  result = None
-
-  @functools.wraps(func)
-  def wrapper(*args, **kwargs):
-    nonlocal result
-    if result is None:
-      result = func(*args, **kwargs)
-    return result
-
-  return wrapper