Delete code and files that are no longer used

Most of this is Gtk related, some of it is helpers that we don't need
anymore. I love the diffstat.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/planner.h b/planner.h
index b61d76b7d..201a2fcd5 100644
--- a/planner.h
+++ b/planner.h
@@ -7,10 +7,7 @@ extern "C" {
 #endif
 
 extern int validate_gas(const char *text, int *o2_p, int *he_p);
-extern int validate_time(const char *text, int *sec_p, int *rel_p);
-extern int validate_depth(const char *text, int *mm_p);
 extern int validate_po2(const char *text, int *mbar_po2);
-extern int validate_volume(const char *text, int *sac);
 extern timestamp_t current_time_notz(void);
 extern void show_planned_dive(char **error_string_p);
 extern int add_duration_to_nth_dp(struct diveplan *diveplan, int idx, int duration, bool is_rel);