fixing 55358 (#56448)

* fixing 55358

* correct codestyle

python/paddle/base/executor.py

@@ -1721,12 +1721,6 @@ class Executor:
                     "Please ensure you create model correctly or you can pass "
                     "the Program or the CompiledProgram manually."
                 )
-            else:
-                error_info = (
-                    "There are no operators in the program to be executed. "
-                    "If you pass Program manually, please use base.program_guard "
-                    "to ensure the current Program is being used."
-                )
                 warnings.warn(error_info)
 
         if scope is None:

test/legacy_test/test_layer_norm_op.py

@@ -639,12 +639,15 @@ class TestLayerNormOp(unittest.TestCase):
 
                 program._sync_with_cpp()
                 exe = base.Executor(place)
+                name_list = ['x', 'y@GRAD']
+                if has_scale:
+                    name_list += ['scale']
+                if has_bias:
+                    name_list += ['bias']
+
                 out = exe.run(
                     program,
-                    feed={
-                        name: var_dict[name]
-                        for name in ['x', 'scale', 'bias', 'y@GRAD']
-                    },
+                    feed={name: var_dict[name] for name in name_list},
                     fetch_list=fetch_list,
                 )
                 # print(y)