befs: remove trailing whitespaces

Removing all trailing whitespaces in befs.

I was skeptic about tainting the history with this, but whitespace changes
can be ignored by using 'git blame -w' and 'git log -w'.
Signed-off-by: NLuis de Bethencourt <luisbg@osg.samsung.com>

fs/befs/io.h

@@ -4,4 +4,3 @@
 
 struct buffer_head *befs_bread_iaddr(struct super_block *sb,
 				     befs_inode_addr iaddr);
-