nixpkgs/neovim: simplify LSP format autocmd

.config/nixpkgs/neovim/autocmd.lua

@@ -72,12 +72,9 @@ vim.api.nvim_create_autocmd('BufWritePre', {
 
     if not vim.g.no_lsp_format then
       -- check if can LSP format
-      local clients = vim.lsp.get_active_clients({ bufnr = opts.buf })
-      for _, client in ipairs(clients) do
-        if client.supports_method('textDocument/formatting', { bufnr = opts.buf }) then
-          vim.lsp.buf.format({ bufnr = opts.buf })
-          return
-        end
+      local clients = vim.lsp.get_clients({ bufnr = opts.buf, method = 'textDocument/formatting' })
+      if #clients > 0 then
+        vim.lsp.buf.format({ bufnr = opts.buf })
       end
     end