Fix T92671: confusing Cycles debug logs about CPU architecture

Instead of printing debug flags listing various CPU and GPU settings that
may or may not be used, print when we are using them. This include CPU
kernel types, OptiX debugging and CUDA and HIP adaptive compilation. BVH
type was already printed.

intern/cycles/blender/python.cpp

@@ -157,8 +157,6 @@ static PyObject *init_func(PyObject * /*self*/, PyObject *args)
 
   DebugFlags().running_inside_blender = true;
 
-  VLOG(2) << "Debug flags initialized to:\n" << DebugFlags();
-
   Py_RETURN_NONE;
 }
 
@@ -885,8 +883,6 @@ static PyObject *debug_flags_update_func(PyObject * /*self*/, PyObject *args)
 
   debug_flags_sync_from_scene(b_scene);
 
-  VLOG(2) << "Debug flags set to:\n" << DebugFlags();
-
   debug_flags_set = true;
 
   Py_RETURN_NONE;
@@ -896,7 +892,6 @@ static PyObject *debug_flags_reset_func(PyObject * /*self*/, PyObject * /*args*/
 {
   debug_flags_reset();
   if (debug_flags_set) {
-    VLOG(2) << "Debug flags reset to:\n" << DebugFlags();
     debug_flags_set = false;
   }
   Py_RETURN_NONE;