Revert "rust: full config"

This reverts commit 00629796bb.

lua/plugins/rustacean.lua

@@ -1,49 +1,15 @@
 return {
   "mrcjkb/rustaceanvim",
-  version = "^4", -- Recommended
-  ft = { "rust" },
   opts = {
     server = {
-      on_attach = function(_, bufnr)
-        vim.keymap.set("n", "<leader>cR", function()
-          vim.cmd.RustLsp("codeAction")
-        end, { desc = "Code Action", buffer = bufnr })
-        vim.keymap.set("n", "<leader>dr", function()
-          vim.cmd.RustLsp("debuggables")
-        end, { desc = "Rust Debuggables", buffer = bufnr })
-      end,
       default_settings = {
         -- rust-analyzer language server configuration
         ["rust-analyzer"] = {
           cargo = {
-            allFeatures = true,
             targetDir = true,
-            loadOutDirsFromCheck = true,
-            buildScripts = {
-              enable = true,
-            },
-          },
-          -- Add clippy lints for Rust.
-          checkOnSave = true,
-          procMacro = {
-            enable = true,
-            ignored = {
-              ["async-trait"] = { "async_trait" },
-              ["napi-derive"] = { "napi" },
-              ["async-recursion"] = { "async_recursion" },
           },
         },
       },
     },
   },
-  },
-  config = function(_, opts)
-    vim.g.rustaceanvim = vim.tbl_deep_extend("keep", vim.g.rustaceanvim or {}, opts or {})
-    if vim.fn.executable("rust-analyzer") == 0 then
-      LazyVim.error(
-        "**rust-analyzer** not found in PATH, please install it.\nhttps://rust-analyzer.github.io/",
-        { title = "rustaceanvim" }
-      )
-    end
-  end,
 }