drop unused add_db_logger call and db table

Fixes: https://pagure.io/koji/issue/469

docs/schema-clear.sql

@@ -17,7 +17,6 @@ DROP TABLE IF EXISTS archivetypes;
 DROP TABLE IF EXISTS win_builds;
 DROP TABLE IF EXISTS maven_builds;
 DROP TABLE IF EXISTS build_notifications;
-DROP TABLE IF EXISTS log_messages;
 DROP TABLE IF EXISTS buildroot_listing;
 DROP TABLE IF EXISTS rpmsigs;
 DROP TABLE IF EXISTS rpminfo;

docs/schema-upgrade-1.13-1.14.sql

@@ -0,0 +1,9 @@
+-- upgrade script to migrate the Koji database schema
+-- from version 1.13 to 1.14
+
+BEGIN;
+
+-- drop unused log_messages table
+DROP TABLE log_messages;
+
+COMMIT;

docs/schema.sql

@@ -685,16 +685,6 @@ CREATE TABLE buildroot_listing (
 ) WITHOUT OIDS;
 CREATE INDEX buildroot_listing_rpms ON buildroot_listing(rpm_id);
 
-CREATE TABLE log_messages (
-    id SERIAL NOT NULL PRIMARY KEY,
-    message TEXT NOT NULL,
-    message_time TIMESTAMP NOT NULL DEFAULT NOW(),
-    logger_name VARCHAR(200) NOT NULL,
-    level VARCHAR(10) NOT NULL,
-    location VARCHAR(200),
-    host VARCHAR(200)
-) WITHOUT OIDS;
-
 CREATE TABLE build_notifications (
     id SERIAL NOT NULL PRIMARY KEY,
     user_id INTEGER NOT NULL REFERENCES users (id),

koji/__init__.py

@@ -3025,17 +3025,5 @@ def add_mail_logger(logger, addr):
     handler.setLevel(logging.ERROR)
     logging.getLogger(logger).addHandler(handler)
 
-def add_db_logger(logger, cnx):
-    handler = DBHandler(cnx, "log_messages", {'message': '%(message)s',
-                                              'message_time': '%(asctime)s',
-                                              'logger_name': '%(name)s',
-                                              'level': '%(levelname)s',
-                                              'location': '%(pathname)s:%(lineno)d',
-                                              'host': socket.getfqdn(),
-                                              })
-    handler.setFormatter(logging.Formatter(datefmt='%Y-%m-%d %H:%M:%S'))
-    logging.getLogger(logger).addHandler(handler)
-    return handler
-
 def remove_log_handler(logger, handler):
     logging.getLogger(logger).removeHandler(handler)