Dropping phase2 from repmgr, it now is an independent tool

called pg_blender

sql_utils/repmgr_wrapper_funcs.sql.in

@@ -7,7 +7,3 @@
 CREATE FUNCTION get_last_xlog_replay_timestamp() RETURNS timestamp with time zone 
 AS 'MODULE_PATHNAME', 'last_xlog_replay_timestamp' 
 LANGUAGE C STRICT;
-
-CREATE FUNCTION get_oldest_xmin() RETURNS bigint
-AS 'MODULE_PATHNAME', 'oldest_xmin'
-LANGUAGE C STRICT;