[chore] Removed lexical_plugin project

Author: scohen

projects/lexical_plugin/lib/lexical/plugin/v1/diagnostic.ex renamed to apps/common/lib/lexical/plugin/v1/diagnostic.ex

@@ -46,7 +46,6 @@ defmodule Lexical.RemoteControl.MixProject do
       {:common, in_umbrella: true},
       {:elixir_sense,
        github: "elixir-lsp/elixir_sense", ref: "73ce7e0d239342fb9527d7ba567203e77dbb9b25"},
-      {:lexical_plugin, path: "../../projects/lexical_plugin"},
       {:patch, "~> 0.15", only: [:dev, :test], optional: true, runtime: false},
       {:path_glob, "~> 0.2", optional: true},
       {:phoenix_live_view, "~> 1.0", only: [:test], optional: true, runtime: false},