shells: some cleanup for bash and zsh

dot_config/zsh/settings.zsh

@@ -7,10 +7,11 @@ SAVEHIST=10000
 HISTSIZE=10000
 HISTFILE=$HOME/.histfile.$UID
 
-EDITOR=vim
-whence hx >/dev/null && EDITOR=hx
+for editor in hx nvim vim vi; do
+    testbin $editor && break
+done
 
-export EDITOR
+export EDITOR=$editor
 export LESS='i M R'
 export PAGER=less
 export TIME_STYLE=long-iso
@@ -42,8 +43,6 @@ zstyle ':completion:*:kill:*:processes' command 'ps --forest -A -o pid,user,cmd'
 zstyle ':completion:*:processes-names' command 'ps axho command'
 zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
 
-unalias ld ls ll &>/dev/null
-
 if testbin mise; then
     eval "$(mise activate zsh)"
 fi