refactor(nvim): remove custom bindings for macro ranges in insert mode

Neovim master now has this functionality natively, no need to include it
and maintain it in my own config.

dots/.config/nvim/lua/core/mappings.lua

@@ -106,12 +106,6 @@ M.setup = function()
     -- Binding to allow shift tab dedent
     vim.keymap.set("i", "<S-Tab>", "<C-d>", { silent = true, desc = "Insert: Dedent" })
 
-    -- Allow macros to be invoked over a visual range via a keybind in visual mode
-    vim.keymap.set("x", "@", "':normal! @'.getcharstr().'<CR>'",
-        { silent = true, expr = true, desc = "Call Macro Against Visual Selection" })
-    vim.keymap.set("x", "Q", ':normal! @<C-R>=reg_recorded()<CR><CR>',
-        { silent = true, desc = "Call Last Macro Against Visual Selection" })
-
     -- Insert an Em Dash in insert mode
     vim.keymap.set("i", "<A-->", "—", { silent = true, desc = "Insert: Em Dash" })
 end