chore(keymaps): remove redundant hlsearch option

This value is a Neovim default value.

References: nvim-lua/kickstart.nvim#1058

Signed-off-by: Fletcher Nichol <fnichol@nichol.ca>

Author: fnichol

home/.config/nvim/lua/my/keymaps.lua

@@ -1,7 +1,6 @@
 --  See `:help vim.keymap.set()`
 
--- Set highlight on search, but clear on pressing <Esc> in normal mode
-vim.opt.hlsearch = true
+-- Clear highlight on search when pressing <Esc> in normal mode
 vim.keymap.set("n", "<Esc>", "<cmd>nohlsearch<CR>")
 
 -- Diagnostic keymaps