dax/hmem: Drop unnecessary dax_hmem_remove()

Empty driver remove callbacks can just be elided.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Gregory Price <gregory.price@memverge.com>
Tested-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/167602001664.1924368.9102029637928071240.stgit@dwillia2-xfh.jf.intel.comSigned-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/dax/hmem/hmem.c

@@ -44,15 +44,8 @@ static int dax_hmem_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int dax_hmem_remove(struct platform_device *pdev)
-{
-	/* devm handles teardown */
-	return 0;
-}
-
 static struct platform_driver dax_hmem_driver = {
 	.probe = dax_hmem_probe,
-	.remove = dax_hmem_remove,
 	.driver = {
 		.name = "hmem",
 	},