[zsh] Remove init-env-unix

This stuff was folded into init-env.

zsh/func/init-env-unix

@@ -1,20 +0,0 @@
-# Eryn Wells <eryn@erynwells.me>
-
-autoload -Uz binary_exists
-
-function init-env-unix
-{
-    export PAGER="less"
-    export MANPAGER=$PAGER
-    export VISUAL=$EDITOR
-    export LESSHISTFILE="-"
-    export GREP_OPTIONS="--color=auto"
-    export GREP_COLOR="1;32"
-
-    if binary_exists gpg2; then
-        # Make sure gpg2 knows what to do with the curses-based smartcard PIN prompt.
-        export GPG_TTY=`tty`
-    fi
-}
-
-init-env-unix "$@"

zshenv

@@ -30,7 +30,6 @@ autoload -Uz do_init_functions
 typeset -a zsh_init_env_functions=( \
     init-env \
     init-env-path \
-    init-env-unix \
     init-env-python \
     init-env-playdate \
     init-env-vi \