Remove bogus advice

Ever since MariaDB 10.0 (and MySQL 5.6.8), the innodb_log_file_size
and innodb_log_files_in_group can be changed between server restarts,
and the redo log files will be resized on server startup if needed.

debian/additions/my.cnf

@@ -131,8 +131,6 @@ max_binlog_size         = 100M
 # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
 # Read the manual for more InnoDB related options. There are many!
 default_storage_engine	= InnoDB
-# you can't just change log file size, requires special procedure
-#innodb_log_file_size	= 50M
 innodb_buffer_pool_size	= 256M
 innodb_log_buffer_size	= 8M
 innodb_file_per_table	= 1