ext4: remove trailing \n from ext4_warning/ext4_error calls

Messages passed to ext4_warning() or ext4_error() don't need trailing
newlines, because these function add the newlines themselves.

Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index e38b987a..37e0592 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -707,7 +707,7 @@
 	    (status & EXTENT_STATUS_WRITTEN)) {
 		ext4_warning(inode->i_sb, "Inserting extent [%u/%u] as "
 				" delayed and written which can potentially "
-				" cause data loss.\n", lblk, len);
+				" cause data loss.", lblk, len);
 		WARN_ON(1);
 	}