ocfs2: remove unused variable

delete_tail_recs in ocfs2_try_to_merge_extent() was only ever set, remove
it.
Signed-off-by: Tao Mao <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

fs/ocfs2/alloc.c

@@ -2807,20 +2807,13 @@ static int ocfs2_try_to_merge_extent(struct inode *inode,
 				     struct ocfs2_merge_ctxt *ctxt)
 
 {
-	int ret = 0, delete_tail_recs = 0;
+	int ret = 0;
 	struct ocfs2_extent_list *el = path_leaf_el(left_path);
 	struct ocfs2_extent_rec *rec = &el->l_recs[split_index];
 
 	BUG_ON(ctxt->c_contig_type == CONTIG_NONE);
 
-	if (ctxt->c_split_covers_rec) {
-		delete_tail_recs++;
-
-		if (ctxt->c_contig_type == CONTIG_LEFTRIGHT ||
-		    ctxt->c_has_empty_extent)
-			delete_tail_recs++;
-
-		if (ctxt->c_has_empty_extent) {
+	if (ctxt->c_split_covers_rec && ctxt->c_has_empty_extent) {
 		/*
 		 * The merge code will need to create an empty
 		 * extent to take the place of the newly
@@ -2837,7 +2830,6 @@ static int ocfs2_try_to_merge_extent(struct inode *inode,
 		split_index--;
 		rec = &el->l_recs[split_index];
 	}
-	}
 
 	if (ctxt->c_contig_type == CONTIG_LEFTRIGHT) {
 		/*