sandbox: Drop CONFIG_HOST_MAX_DEVICES

This can go in the related header file. Drop the CONFIG option.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/cmd/host.c b/cmd/host.c
index 2e998ab..f0d989a 100644
--- a/cmd/host.c
+++ b/cmd/host.c
@@ -78,7 +78,7 @@
 	if (argc < 1 || argc > 2)
 		return CMD_RET_USAGE;
 	int min_dev = 0;
-	int max_dev = CONFIG_HOST_MAX_DEVICES - 1;
+	int max_dev = SANDBOX_HOST_MAX_DEVICES - 1;
 	if (argc >= 2) {
 		char *ep;
 		char *dev_str = argv[1];