Revert "register ModifyAttr for instance_norm, test=op_version (#29938)"

paddle/fluid/operators/instance_norm_op.cc

@@ -17,7 +17,6 @@ limitations under the License. */
 #include <string>
 #include <unordered_map>
 #include "paddle/fluid/framework/data_layout.h"
-#include "paddle/fluid/framework/op_version_registry.h"
 #include "paddle/fluid/operators/math/math_function.h"
 
 namespace paddle {
@@ -702,20 +701,3 @@ REGISTER_OP_CPU_KERNEL(
                                       float>,
     ops::InstanceNormDoubleGradKernel<paddle::platform::CPUDeviceContext,
                                       double>);
-
-REGISTER_OP_VERSION(instance_norm)
-    .AddCheckpoint(
-        R"ROC(
-      Change dispensable of attribute from False to True in instance_norm.
-    )ROC",
-        paddle::framework::compatible::OpVersionDesc()
-            .ModifyAttr(
-                "Bias",
-                "The arg 'dispensable' of Input 'Bias' is changed: from "
-                "'False' to 'True'.",
-                true)
-            .ModifyAttr(
-                "Scale",
-                "The arg 'dispensable' of Input 'Scale' is changed: from "
-                "'False' to 'True'.",
-                true));