Remove disk and disk_size method from the create_node() method in

Equinix compute driver.

Corrresponding volume management methods have been removed so those
arguments don't make sense anymore.

libcloud/compute/drivers/equinixmetal.py

@@ -282,8 +282,6 @@ def create_node(
         ex_project_id=None,
         ip_addresses=[],
         cloud_init=None,
-        disk=None,
-        disk_size=0,
         **kwargs,
     ):
         """
@@ -336,13 +334,6 @@ def create_node(
             raise ValueError("Failed to create node: %s" % (error_message))
         node = self._to_node(data=data.object)
 
-        if disk:
-            self.attach_volume(node, disk)
-
-        if disk_size:
-            volume = self.create_volume(size=disk_size, location=location)
-            self.attach_volume(node, volume)
-
         return node
 
     def reboot_node(self, node):