revert back to old diagnostic float window

lua/plugins/lsp_lines.lua

@@ -1,14 +0,0 @@
-return {
-  'https://git.sr.ht/~whynothugo/lsp_lines.nvim',
-  config = true,
-  keys = {
-    {
-      '<space>l',
-      function()
-        require('lsp_lines').toggle()
-      end,
-      desc = 'Toggle lsp_lines',
-    }
-  },
-  event = 'LspAttach'
-}

lua/plugins/lspconfig.lua

@@ -123,6 +123,7 @@ return {
       vim.keymap.set('n', '<A-o>', '<cmd>ClangdSwitchSourceHeader<CR>',
         { noremap = true, silent = false, desc = 'Switch Source/Header', buffer = bufnr })
 
+      vim.cmd([[autocmd CursorHold <buffer> lua OpenDiagFloat()]])
 
       -- Set some keybinds conditional on server capabilities
       if client.server_capabilities.documentFormattingProvider then