update op_compat.yaml [phi_ops] (#78819)

* update op_compat.yaml

* fix

Author: co63oc

paddle/phi/ops/yaml/op_compat.yaml

@@ -206,14 +206,6 @@
     amin_grad : GetReduceGradExpectedKernelType
   manual_signature : [amin]
 
-- op : aminmax
-  backward : aminmax_grad
-  inputs :
-    x : X
-  outputs :
-    {min : Min, max : Max}
-  manual_signature : [aminmax]
-
 - op : anchor_generator
   inputs:
     input : Input

test/legacy_test/test_aminmax_op.py

@@ -51,12 +51,12 @@ def setUp(self):
         self.init_args()
         np.random.seed(2025)
         self.input_data = np.random.random(self.shape).astype(self.dtype)
-        self.inputs = {'X': self.input_data}
+        self.inputs = {'x': self.input_data}
         self.attrs = {'axis': self.axis, 'keepdim': self.keepdim}
         min_val, max_val = ref_aminmax(
             self.input_data, axis=self.axis_for_np, keepdim=self.keepdim
         )
-        self.outputs = {'Min': min_val, 'Max': max_val}
+        self.outputs = {'min': min_val, 'max': max_val}
 
     def init_dtype(self):
         self.dtype = np.float64
@@ -74,8 +74,8 @@ def test_check_output(self):
 
     def test_check_grad(self):
         self.check_grad(
-            ['X'],
-            ['Min', 'Max'],
+            ['x'],
+            ['min', 'max'],
             check_pir=True,
         )