Use the right call

Author: rowleya

spynnaker/pyNN/models/neuron/population_vertex.py

@@ -525,7 +525,7 @@ def combined_binary_exists(self) -> bool:
         """
         # If we are in virtual machine mode, we can work without binaries
         # so easier to assume they exist
-        if SpynnakerDataView().is_virtual_machine_mode():
+        if get_config_bool("Machine", "virtual_board"):
             return True
         try:
             SpynnakerDataView().get_executable_path(
@@ -543,7 +543,7 @@ def split_binaries_exist(self) -> bool:
         """
         # If we are in virtual machine mode, we can work without binaries
         # so easier to assume they exist
-        if SpynnakerDataView().is_virtual_machine_mode():
+        if get_config_bool("Machine", "virtual_board"):
             return True
         try:
             SpynnakerDataView().get_executable_path(