iterator: drop unused/unimplemented `seek`

src/iterator.c

@@ -17,7 +17,6 @@
 	(P)->cb.current = NAME_LC ## _iterator__current; \
 	(P)->cb.advance = NAME_LC ## _iterator__advance; \
 	(P)->cb.advance_into = NAME_LC ## _iterator__advance_into; \
-	(P)->cb.seek    = NAME_LC ## _iterator__seek; \
 	(P)->cb.reset   = NAME_LC ## _iterator__reset; \
 	(P)->cb.at_end  = NAME_LC ## _iterator__at_end; \
 	(P)->cb.free    = NAME_LC ## _iterator__free; \
@@ -271,12 +270,6 @@ static int empty_iterator__noop(const git_index_entry **e, git_iterator *i)
 	return GIT_ITEROVER;
 }
 
-static int empty_iterator__seek(git_iterator *i, const char *p)
-{
-	GIT_UNUSED(i); GIT_UNUSED(p);
-	return -1;
-}
-
 static int empty_iterator__reset(git_iterator *i, const char *s, const char *e)
 {
 	GIT_UNUSED(i); GIT_UNUSED(s); GIT_UNUSED(e);
@@ -748,12 +741,6 @@ static int tree_iterator__advance_into(
 	return tree_iterator__current(entry, self);
 }
 
-static int tree_iterator__seek(git_iterator *self, const char *prefix)
-{
-	GIT_UNUSED(self); GIT_UNUSED(prefix);
-	return -1;
-}
-
 static int tree_iterator__reset(
 	git_iterator *self, const char *start, const char *end)
 {
@@ -1030,12 +1017,6 @@ static int index_iterator__advance_into(
 	return index_iterator__current(entry, self);
 }
 
-static int index_iterator__seek(git_iterator *self, const char *prefix)
-{
-	GIT_UNUSED(self); GIT_UNUSED(prefix);
-	return -1;
-}
-
 static int index_iterator__reset(
 	git_iterator *self, const char *start, const char *end)
 {
@@ -1498,16 +1479,6 @@ static int fs_iterator__advance(
 	return fs_iterator__advance_over(entry, self);
 }
 
-static int fs_iterator__seek(git_iterator *self, const char *prefix)
-{
-	GIT_UNUSED(self);
-	GIT_UNUSED(prefix);
-	/* pop stack until matching prefix */
-	/* find prefix item in current frame */
-	/* push subdirectories as deep as possible while matching */
-	return 0;
-}
-
 static int fs_iterator__reset(
 	git_iterator *self, const char *start, const char *end)
 {

src/iterator.h

@@ -57,7 +57,6 @@ typedef struct {
 	int (*current)(const git_index_entry **, git_iterator *);
 	int (*advance)(const git_index_entry **, git_iterator *);
 	int (*advance_into)(const git_index_entry **, git_iterator *);
-	int (*seek)(git_iterator *, const char *prefix);
 	int (*reset)(git_iterator *, const char *start, const char *end);
 	int (*at_end)(git_iterator *);
 	void (*free)(git_iterator *);
@@ -200,13 +199,6 @@ GIT_INLINE(int) git_iterator_advance_into_or_over(
 	return error;
 }
 
-/* Seek is currently unimplemented */
-GIT_INLINE(int) git_iterator_seek(
-	git_iterator *iter, const char *prefix)
-{
-	return iter->cb->seek(iter, prefix);
-}
-
 /**
  * Go back to the start of the iteration.
  *