utf8.c: remove strbuf_write()
utf8.c: remove strbuf_write()

The patch before the previous one made sure that all callers of
strbuf_add_wrapped_text() supply a strbuf.  Replace all calls of
strbuf_write() with regular strbuf functions and remove it.

Signed-off-by: Rene Scharfe <5c721353370dda279bee7751cb8d3ff68ef77242@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git