[ticket/12883] Do not use basename() to get the search class in tidy_search

PHPBB3-12883
[ticket/12883] Remove pointless comments

PHPBB3-12883
Merge pull request #2768 from Nicofuma/ticket/12883

[ticket/12883] Do not use basename() to get the search class in tidy_search

* Nicofuma/ticket/12883:
  [ticket/12883] Remove pointless comments
  [ticket/12883] Do not use basename() to get the search class in tidy_search