isolating this bit of complexity in movement function; Add ifdefs in clock faces for DCE

movement/watch_faces/clock/clock_face.c

@@ -53,7 +53,11 @@ typedef struct {
 } clock_state_t;
 
 static bool clock_is_in_24h_mode(movement_settings_t *settings) {
+#ifdef CLOCK_FACE_24H_ONLY
+    return true;
+#else
     return settings->bit.clock_mode_24h;
+#endif
 }
 
 static void clock_indicate(WatchIndicatorSegment indicator, bool on) {

movement/watch_faces/clock/simple_clock_face.c

@@ -51,7 +51,11 @@ void simple_clock_face_activate(movement_settings_t *settings, void *context) {
 
     if (watch_tick_animation_is_running()) watch_stop_tick_animation();
 
+#ifdef CLOCK_FACE_24H_ONLY
+    watch_set_indicator(WATCH_INDICATOR_24H);
+#else
     if (settings->bit.clock_mode_24h) watch_set_indicator(WATCH_INDICATOR_24H);
+#endif
 
     // handle chime indicator
     if (state->signal_enabled) watch_set_indicator(WATCH_INDICATOR_BELL);
@@ -106,6 +110,7 @@ bool simple_clock_face_loop(movement_event_t event, movement_settings_t *setting
                 sprintf(buf, "%02d%02d", date_time.unit.minute, date_time.unit.second);
             } else {
                 // other stuff changed; let's do it all.
+#ifndef CLOCK_FACE_24H_ONLY
                 if (!settings->bit.clock_mode_24h) {
                     // if we are in 12 hour mode, do some cleanup.
                     if (date_time.unit.hour < 12) {
@@ -116,6 +121,7 @@ bool simple_clock_face_loop(movement_event_t event, movement_settings_t *setting
                     date_time.unit.hour %= 12;
                     if (date_time.unit.hour == 0) date_time.unit.hour = 12;
                 }
+#endif
                 pos = 0;
                 if (event.event_type == EVENT_LOW_ENERGY_UPDATE) {
                     if (!watch_tick_animation_is_running()) watch_start_tick_animation(500);