The non utf8 version of turkish is a bit unhandy.
Delete `language_tr.h`
Rename `language_tr_utf.h` to `language_tr.h`
Provide a propper utf8-mapper for Turkish and use it.
・Remove all the #ifndef
・Follow the PR #4603 (Strip never-translated strings from language
files)
・Follow the PR #4634 (Set language display charset in language.h)
・Follow the PR #4936 (Put max_jerk vars in array, clean up jerk code)
・Adjust spacing