cleanup: make taxonomy_index_for_category() local to taxonomy.c

This helper function is not used outside taxonomy.c anymore.
Let's hide this implementation detail.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 0 insertions, 1 deletions

diff --git a/core/taxonomy.h b/core/taxonomy.h
index 01a273053..a2c03220c 100644
--- a/core/taxonomy.h
+++ b/core/taxonomy.h
@@ -41,7 +41,6 @@ struct taxonomy_data {
 
 void free_taxonomy(struct taxonomy_data *t);
 void copy_taxonomy(const struct taxonomy_data *orig, struct taxonomy_data *copy);
-int taxonomy_index_for_category(const struct taxonomy_data *t, enum taxonomy_category cat);
 const char *taxonomy_get_value(const struct taxonomy_data *t, enum taxonomy_category cat);
 const char *taxonomy_get_country(const struct taxonomy_data *t);
 void taxonomy_set_category(struct taxonomy_data *t, enum taxonomy_category category, const char *value, enum taxonomy_origin origin);