[JFFS2] Remove stray __exit from jffs2_compressors_exit()

It's used from the initfunc in case of failure too. We could actually do
with an '__initexit' for this kind of thing -- when built in to the
kernel, it could do with being dropped with the init text. We _could_
actually just use __init for it, but that would break if/when we start
dropping init text from modules. So let's just leave it as it was for now,
and mutter a little more about random 'janitorial' fixes from people who
aren't paying attention to what they're doing.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

fs/jffs2/compr.c

@@ -440,7 +440,7 @@ int __init jffs2_compressors_init(void)
         return 0;
 }
 
-int __exit jffs2_compressors_exit(void)
+int jffs2_compressors_exit(void)
 {
 /* Unregistering compressors */
 #ifdef CONFIG_JFFS2_RUBIN