env: Remove misuse of env is nowhere leftover

When using a list of writeable variables, the initial values come from
the built-in default environment since commit 5ab8105836
("env: Complete generic support for writable list"). Remove leftover of
misuse of the env is nowhere driver as default environment.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>

env/env.c

@@ -217,9 +217,7 @@ int env_load(void)
 			printf("OK\n");
 			gd->env_load_prio = prio;
 
-#if !CONFIG_IS_ENABLED(ENV_APPEND)
 			return 0;
-#endif
 		} else if (ret == -ENOMSG) {
 			/* Handle "bad CRC" case */
 			if (best_prio == -1)