drop unused header definitions

libnixstore/include/nix.h

@@ -9,18 +9,11 @@ bool is_valid_path(rust::Str path);
 rust::String query_path_hash(rust::Str path);
 InternalPathInfo query_path_info(rust::Str path, bool base32);
 rust::String query_path_from_hash_part(rust::Str hash_part);
-void export_paths(int32_t fd, rust::Vec<rust::Str> paths);
-void import_paths(int32_t fd, bool dont_check_signs);
-rust::String hash_file(rust::Str algo, bool base32, rust::Str path);
-rust::String hash_string(rust::Str algo, bool base32, rust::Str s);
 rust::String convert_hash(rust::Str algo, rust::Str s, bool to_base_32);
 rust::String sign_string(rust::Str secret_key, rust::Str msg);
 bool check_signature(rust::Str public_key, rust::Str sig, rust::Str msg);
 InternalDrv derivation_from_path(rust::Str drv_path);
-void add_temp_root(rust::Str store_path);
-rust::String get_bin_dir();
 rust::String get_store_dir();
-
 rust::String get_build_log(rust::Str derivation_path);
 rust::String get_nar_list(rust::Str store_path);