Fix old unresolved merge conflicts in pg.sql

Please note that ejabberd takes care to create the tables in your
ODBC database if needed. The file pg.sql is provided for reference
purposes only, as it isn't needed when preparing the database.

src/odbc/pg.sql

@@ -44,11 +44,8 @@ CREATE TABLE rosterusers (
     server character(1) NOT NULL,
     subscribe text,
     "type" text,
-<<<<<<< HEAD
     PRIMARY KEY (host, username, jid)
-=======
     created_at TIMESTAMP NOT NULL DEFAULT now()
->>>>>>> 30
 );
 
 CREATE TABLE rostergroups (
@@ -64,24 +61,16 @@ CREATE TABLE spool (
     host text NOT NULL,
     xml text NOT NULL,
     seq SERIAL,
-<<<<<<< HEAD
     PRIMARY KEY (host, username, seq)
-=======
     created_at TIMESTAMP NOT NULL DEFAULT now()
->>>>>>> 30
 );
 
 CREATE TABLE vcard (
-<<<<<<< HEAD
     username text NOT NULL,
     host text NOT NULL,
     vcard text NOT NULL,
     PRIMARY KEY (host, username)
-=======
-    username text PRIMARY KEY,
-    vcard text NOT NULL,
     created_at TIMESTAMP NOT NULL DEFAULT now()
->>>>>>> 30
 );
 
 CREATE TABLE vcard_search (
@@ -138,11 +127,8 @@ CREATE TABLE privacy_list (
     host text NOT NULL,
     name text NOT NULL,
     id SERIAL UNIQUE,
-<<<<<<< HEAD
     PRIMARY KEY (host, username, name)
-=======
     created_at TIMESTAMP NOT NULL DEFAULT now()
->>>>>>> 30
 );
 
 CREATE TABLE privacy_list_data (
@@ -164,11 +150,8 @@ CREATE TABLE private_storage (
     host text NOT NULL,
     namespace text NOT NULL,
     data text NOT NULL,
-<<<<<<< HEAD
     PRIMARY KEY (host, username, namespace)
-=======
     created_at TIMESTAMP NOT NULL DEFAULT now()
->>>>>>> 30
 );
 
 CREATE TABLE hosts (