efi_loader: simplify running helloworld.efi

Currently when executing 'bootefi hello' we copy helloworld.efi to the
address identified by environment variable loadaddr. This is unexected
behavior for a user. There is no need to copy helloworld.efi before
executing it after relocation.

Remove the copy action.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index fdf909f..c82a5ba 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -403,19 +403,9 @@
 
 #ifdef CONFIG_CMD_BOOTEFI_HELLO
 	if (!strcmp(image_opt, "hello")) {
-		char *saddr;
-
-		saddr = env_get("loadaddr");
+		image_buf = __efi_helloworld_begin;
 		size = __efi_helloworld_end - __efi_helloworld_begin;
 
-		if (saddr)
-			addr = simple_strtoul(saddr, NULL, 16);
-		else
-			addr = CONFIG_SYS_LOAD_ADDR;
-
-		image_buf = map_sysmem(addr, size);
-		memcpy(image_buf, __efi_helloworld_begin, size);
-
 		efi_free_pool(bootefi_device_path);
 		efi_free_pool(bootefi_image_path);
 		bootefi_device_path = NULL;