positions changed. Fixed by removing binlog positions from
output, and also:
 - removed code not used to verify the tested property
 - added comments


mysql-test/suite/rpl/r/rpl_row_inexist_tbl.result:
  Updated result file.
mysql-test/suite/rpl/t/rpl_row_inexist_tbl-slave.opt:
  Removed option file: it's not needed any more.
mysql-test/suite/rpl/t/rpl_row_inexist_tbl.test:
  Improved the test in the following ways:
   - The table t2 was not used to verify the property to test,
  so t2 has been removed.
   - Now printing only the relevant column from SHOW SLAVE STATUS
   - Added comments.