mercurial/thirdparty/xdiff/xdiffi.c

--- a/mercurial/thirdparty/xdiff/xdiffi.c	Sat Mar 03 10:39:43 2018 -0800
+++ b/mercurial/thirdparty/xdiff/xdiffi.c	Sat Mar 03 10:39:55 2018 -0800
@@ -328,12 +328,6 @@
 	xdalgoenv_t xenv;
 	diffdata_t dd1, dd2;
 
-	if (XDF_DIFF_ALG(xpp->flags) == XDF_PATIENCE_DIFF)
-		return xdl_do_patience_diff(mf1, mf2, xpp, xe);
-
-	if (XDF_DIFF_ALG(xpp->flags) == XDF_HISTOGRAM_DIFF)
-		return xdl_do_histogram_diff(mf1, mf2, xpp, xe);
-
 	if (xdl_prepare_env(mf1, mf2, xpp, xe) < 0) {
 
 		return -1;