chore(shell): remove eza

Drop the ls/tree eza aliases, swap the two fzf directory previews to a
portable 'ls -la', and delete the install-eza installer.

home_root/.zshrc

@@ -69,9 +69,7 @@ zstyle ':fzf-tab:complete:__zoxide_z:*' fzf-preview 'ls --color $realpath'
 zstyle ':fzf-tab:*' fzf-command ftb-tmux-popup
 
 # aliases
-alias ls='eza'
 alias cat='bat'
-alias tree='eza --tree'
 
 # To customize prompt, run `p10k configure` or edit ~/.p10k.zsh.
 [[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh
@@ -90,13 +88,13 @@ _fzf_compgen_dir() {
 source ~/fzf-git.sh/fzf-git.sh
 
 export FZF_CTRL_T_OPTS="--preview 'bat -n --color=always --line-range :500 {}'"
-export FZF_ALT_C_OPTS="--preview 'eza --tree --color=always {} | head -200'"
+export FZF_ALT_C_OPTS="--preview 'ls -la {} | head -200'"
 
 _fzf_comprun() {
     local command=$1
     shift
      case "$command" in
-        cd)               fzf --preview 'eza --tree --color=always {} | head -200' "$@" ;;
+        cd)               fzf --preview 'ls -la {} | head -200' "$@" ;;
         export|unset)     fzf --preview "eval 'echo \$' {}"   "$@" ;;
         ssh)              fzf --preview 'dig {}'  "$@" ;;
         *)                fzf --preview 'bat -n --color=always --line-range :500 {}' "$@" ;;