polish code, test=develop (#22380)

remove unnecessary template.

paddle/fluid/imperative/tracer.h

@@ -87,10 +87,7 @@ class Tracer {
 
   platform::Place ExpectedPlace() const { return expected_place_; }
 
-  template <typename PlaceType>
-  void SetExpectedPlace(PlaceType place) {
-    expected_place_ = place;
-  }
+  void SetExpectedPlace(platform::Place place) { expected_place_ = place; }
 
   bool NoGrad() const { return no_grad_; }
 

paddle/fluid/pybind/imperative.cc

@@ -536,18 +536,18 @@ void BindImperative(py::module *m_ptr) {
           [](imperative::Tracer &self, const py::object &obj) {
             if (py::isinstance<platform::CUDAPlace>(obj)) {
               auto p = obj.cast<platform::CUDAPlace *>();
-              self.SetExpectedPlace<platform::CUDAPlace>(*p);
+              self.SetExpectedPlace(*p);
             } else if (py::isinstance<platform::CPUPlace>(obj)) {
               auto p = obj.cast<platform::CPUPlace *>();
-              self.SetExpectedPlace<platform::CPUPlace>(*p);
+              self.SetExpectedPlace(*p);
             } else if (py::isinstance<platform::CUDAPinnedPlace>(obj)) {
               auto p = obj.cast<platform::CUDAPinnedPlace *>();
-              self.SetExpectedPlace<platform::CUDAPinnedPlace>(*p);
+              self.SetExpectedPlace(*p);
             } else {
-              PADDLE_THROW(
+              PADDLE_THROW(platform::errors::InvalidArgument(
                   "Incompatible Place Type: supports CUDAPlace, CPUPlace, "
-                  "CUDAPinnedPlace, "
-                  "but got Unknown Type!");
+                  "and CUDAPinnedPlace, "
+                  "but got Unknown Type!"));
             }
           })
       .def("_get_program_desc_tracer",