unlimit [ -hs ] resource ...
       The  resource  limit for each resource is set to the hard limit.  If
       the -h flag is given and the shell has appropriate  privileges,  the
       hard  resource limit for each resource is removed.  The resources of
       the shell process are only changed if the -s flag is given.

       The unlimit command is not made available by default when the  shell
       starts  in a mode emulating another shell.  It can be made available
       with the command `zmodload -F zsh/rlimits b:unlimit'.
