vulkan: remove unused VkCommand

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9045>

src/vulkan/util/gen_enum_to_str.py

@@ -279,15 +279,6 @@ class VkEnum(object):
         self.guard = g
 
 
-class VkCommand(object):
-    """Simple struct-like class representing a single Vulkan command"""
-
-    def __init__(self, name, device_entrypoint=False):
-        self.name = name
-        self.device_entrypoint = device_entrypoint
-        self.extension = None
-
-
 class VkChainStruct(object):
     """Simple struct-like class representing a single Vulkan struct identified with a VkStructureType"""
     def __init__(self, name, stype):