style(lsp): remove refs to document_highlight, which is no longer used

lua/lazyvim/plugins/extras/editor/illuminate.lua

@@ -56,8 +56,4 @@ return {
       { "[[", desc = "Prev Reference" },
     },
   },
-  {
-    "neovim/nvim-lspconfig",
-    opts = { document_highlight = { enabled = false } },
-  },
 }

lua/lazyvim/plugins/lsp/init.lua

@@ -46,10 +46,6 @@ return {
         codelens = {
           enabled = false,
         },
-        -- Enable lsp cursor word highlighting
-        document_highlight = {
-          enabled = true,
-        },
         -- add any global capabilities here
         capabilities = {
           workspace = {