(fontset_ref): Remove unused variable `i'.

(fontset_ref): Remove unused variable `i'.
(fontset_set): Remove unused variables `j' and `tmp'.
(make_fontset): Remove unused variables `i', `j', `elt' and
`base_elt'.
(make_fontset_for_ascii_face): Remove unused variable `name'.
(fs_load_font): Remove unused variable `font_idx'.
(fs_query_fontset): Remove unused function-local variable
`fontset'.
(list_fontsets): Remove unused variable `tail'.
(Fnew_fontset): Remove unused variables `family' and `registry'.
(accumulate_font_info): Remove unused variable `tmp'.
(Ffontset_font): Remove unused variable `id'.
(syms_of_fontset): Remove unused variable `i'.