resize2fs: remove bigalloc warning for online resizing

The kernel supports online resizing of bigalloc file systems.  There's
no real point to have a scary messaging when doing an online resize of
bigalloc file systems, since all of the heavy lifting is done by the
kernel.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/resize/main.c b/resize/main.c
index 600e820..a0c31c0 100644
--- a/resize/main.c
+++ b/resize/main.c
@@ -606,7 +606,6 @@
 		exit(0);
 	}
 	if (mount_flags & EXT2_MF_MOUNTED) {
-		bigalloc_check(fs, force);
 		retval = online_resize_fs(fs, mtpt, &new_size, flags);
 	} else {
 		bigalloc_check(fs, force);