refactor(fig)!: remove archived `fig` plugin

BREAKING CHANGE: the fig plugin has been removed. `fig` was sunset
on September 1, 2024. Having this plugin no longer makes sense.
See https://fig.io/ for more information.

plugins/fig/README.md

@@ -1,9 +0,0 @@
-# Fig plugin
-
-This plugin sets up completion for [Fig](https://fig.io/).
-
-To use it, add `fig` to the plugins array in your zshrc file:
-
-```zsh
-plugins=(... fig)
-```

plugins/fig/fig.plugin.zsh

@@ -1,13 +0,0 @@
-if ! (( $+commands[fig] )); then
-  return
-fi
-
-# If the completion file doesn't exist yet, we need to autoload it and
-# bind it to `fig`. Otherwise, compinit will have already done that
-if [[ ! -f "$ZSH_CACHE_DIR/completions/_fig" ]]; then
-  autoload -Uz _fig
-  typeset -g -A _comps
-  _comps[fig]=_fig
-fi
-
-fig completion zsh >| "$ZSH_CACHE_DIR/completions/_fig" &|