keep some gitsigns mappings only | rm 0.7v related stuff

lua/core/options.lua

@@ -2,18 +2,11 @@ local opt = vim.opt
 local g = vim.g
 local config = require("core.utils").load_config()
 
-g.vim_version = vim.version().minor
 g.nvchad_theme = config.ui.theme
 g.toggle_theme_icon = "   "
 g.transparency = config.ui.transparency
 g.theme_switcher_loaded = false
 
--- use filetype.lua instead of filetype.vim. it's enabled by default in neovim 0.8 (nightly)
-if g.vim_version < 8 then
-  g.did_load_filetypes = 0
-  g.do_filetype_lua = 1
-end
-
 opt.laststatus = 3 -- global statusline
 opt.showmode = false