src/*.c: Remove some additional unused parameters.

src/*.c: Remove some additional unused parameters.

* lisp.h (multibyte_char_to_unibyte):
* character.c (multibyte_char_to_unibyte): Remove parameter `rev_tbl',
  unused since 2002-03-01T01:16:34Z!handa@m17n.org and 2008-02-01T16:01:31Z!miles@gnu.org.
* character.h (CHAR_TO_BYTE8):
* cmds.c (internal_self_insert):
* editfns.c (general_insert_function):
* keymap.c (push_key_description):
* search.c (Freplace_match):
* xdisp.c (message_dolog, set_message_1): All callers changed.

* coding.c (encode_designation_at_bol): Remove parameter `charbuf_end',
  unused since 2002-03-01T01:17:24Z!handa@m17n.org and 2008-02-01T16:01:31Z!miles@gnu.org.
  All callers changed.