refactor(utils): remove unused code

lua/gopher/_utils/init.lua

@@ -1,16 +1,5 @@
 local utils = {}
 
-local TITLE = "gopher.nvim"
-
----@param t table
----@return boolean
-function utils.is_tbl_empty(t)
-  if t == nil then
-    return true
-  end
-  return next(t) == nil
-end
-
 ---@param msg string
 ---@param lvl number
 function utils.deferred_notify(msg, lvl)

spec/units/utils_spec.lua

@@ -1,16 +1,6 @@
 describe("gopher._utils", function()
   local u = require "gopher._utils"
 
-  describe(".is_tbl_empty()", function()
-    it("it is empty", function()
-      assert.are.same(true, u.is_tbl_empty {})
-    end)
-
-    it("it is not empty", function()
-      assert.are.same(false, u.is_tbl_empty { first = "1", second = 2 })
-    end)
-  end)
-
   describe(".sreq()", function()
     it("can require existing module", function()
       assert.are.same(require "gopher", u.sreq "gopher")