Merge pull request #1218 from hrvojem/5.5-ps-bug1137156

Fixed LP Bug #1137156 by removing the doc file because feature was never used/ported to 5.5

Author: hrvojem

doc/source/index.rst

@@ -112,7 +112,6 @@ Reliability Improvements
 
    reliability/crash_resistant_replication
    reliability/log_connection_error
-   reliability/error_pad
    reliability/innodb_corrupt_table_action
    reliability/show_slave_status_nolock