BF2022161 Process MRPUpdate failing

- nextidfunc() missing on some postgresql systems
- remove old placeholders

migration/351a-trunk/234_create_nextidfunc.sql

@@ -0,0 +1,2 @@
+-- placeholder
+-- migration script just for postgresql

migration/351a-trunk/postgresql/234_create_nextidfunc.sql

@@ -0,0 +1,7 @@
+-- missing function nextIDfunc
+CREATE OR REPLACE FUNCTION nextIDfunc(AD_Sequence_ID INTEGER, System VARCHAR)
+RETURNS INTEGER
+AS 'org.compiere.sqlj.Adempiere.nextIDfunc(int,java.lang.String)'
+LANGUAGE java VOLATILE;
+
+ALTER FUNCTION nextIDfunc(AD_Sequence_ID INTEGER, System VARCHAR) OWNER TO adempiere;