test: don't run test-tick-processor.js on Aix

test: don't run test-tick-processor.js on Aix

Currently the test-tick-processor functionality in V8
depends on addresses being smaller than a full 64 bits.  Aix supports
the full 64 bits and the result is that it does not process the
addresses correctly and runs of out memory.
Disabling until we get a fix upstreamed into V8.

PR-URL: https://github.com/nodejs/node/pull/5093
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: thefourtheye - Sakthipriyan Vairamani <thechargingvolcano@gmail.com>