Since f1068efefe (sha1_file: drop experimental GIT_USE_LOOKUP search, 2017-08-09)
the definition of sha1_entry_pos() has been removed from "sha1-lookup.c", so
there is no need anymore for its declaration in "sha1-lookup.h".
Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>