Revert "Fix tagrelative option not considered in builtin.tags (#2583)" (#2629)

This reverts commit 6074847b6e due to
performance regression.

lua/telescope/make_entry.lua

@@ -1086,9 +1086,9 @@ function make_entry.gen_from_ctags(opts)
 
   local current_file_cache = {}
   return function(line)
-    local tag_file
-    -- split line by ':'
-    tag_file, line = string.match(line, "([^:]+):(.+)")
+    if line == "" or line:sub(1, 1) == "!" then
+      return nil
+    end
 
     local tag, file, scode, lnum
     -- ctags gives us: 'tags\tfile\tsource'
@@ -1098,12 +1098,6 @@ function make_entry.gen_from_ctags(opts)
       tag, file, lnum = string.match(line, "([^\t]+)\t([^\t]+)\t(%d+).*")
     end
 
-    -- append tag file path
-    if vim.opt.tagrelative:get() then
-      local tag_path = Path:new(tag_file):parent()
-      file = Path:new(tag_path .. "/" .. file):normalize(cwd)
-    end
-
     if Path.path.sep == "\\" then
       file = string.gsub(file, "/", "\\")
     end