fix bug DLTP-31078 (#33877)

python/paddle/fluid/contrib/mixed_precision/fp16_lists.py

@@ -14,7 +14,6 @@
 
 import copy
 from ... import core
-import paddle.fluid as fluid
 
 __all__ = ["CustomOpLists", "AutoMixedPrecisionLists"]
 
@@ -154,7 +153,7 @@ gray_list = {
 # The set of ops that don't support fp16 calculation
 # lookup_table fp16 is slower than fp32, though fp16 is supported.
 _sys_unsupported_fp16_list = []
-if fluid.is_compiled_with_xpu():
+if core.is_compiled_with_xpu():
     _, _, _sys_unsupported_fp16_list = core.op_supported_infos(
         'XPU', core.VarDesc.VarType.FP16)
 else: