configs: remove convert unicode which is deprecated

configs/development.ini

@@ -614,7 +614,6 b' sqlalchemy.db1.echo = false'
 
 ; recycle the connections after this amount of seconds
 sqlalchemy.db1.pool_recycle = 3600
-sqlalchemy.db1.convert_unicode = true
 
 ; the number of connections to keep open inside the connection pool.
 ; 0 indicates no limit

configs/production.ini

@@ -565,7 +565,6 b' sqlalchemy.db1.echo = false'
 
 ; recycle the connections after this amount of seconds
 sqlalchemy.db1.pool_recycle = 3600
-sqlalchemy.db1.convert_unicode = true
 
 ; the number of connections to keep open inside the connection pool.
 ; 0 indicates no limit