Revert PR #470 - implement automatic DST toggling

The DST code has not yet been fully tested, the upcoming movement
refactor is upon us and it will integrate with the micro timezone
library anyway. Revert it so that next can be merged into main.

This reverts commit ac5bf8cfce, reversing
changes made to 5a8a49a8c7.

movement/movement_config.h

@@ -95,11 +95,4 @@ const watch_face_t watch_faces[] = {
  */
 #define MOVEMENT_DEFAULT_LED_DURATION 1
 
-/* Set if using DST
- * Valid values are:
- * false: Don't allow the watch to use DST
- * true: Allow the watch to use DST
- */
-#define MOVEMENT_DEFAULT_DST_ACTIVE true
-
 #endif // MOVEMENT_CONFIG_H_