remove superflous ifs, rename reverse_map vars

remove the i++ relict from the before time, when we handling this as array,
rather than hash.
Also, we're renaming reverse_maps variables here for more clarity (I
hope).
remove the autogenerated reverse_map

we have no idea what consequence this really has in the real world, so
we're removing it.
Reference:
http://www.mail-archive.com/users@trafficserver.apache.org/msg03061.html