Remove enum movement_direction

There's no point having both movement_direction and wlr_direction. This
replaces the former with the latter.

As movement_direction also contained MOVE_PARENT and MOVE_CHILD items,
these are now checked specifically in the focus command and handled in
separate functions, just like the other focus variants.

include/sway/output.h

@@ -62,7 +62,7 @@ void output_begin_destroy(struct sway_output *output);
 struct sway_output *output_from_wlr_output(struct wlr_output *output);
 
 struct sway_output *output_get_in_direction(struct sway_output *reference,
-		enum movement_direction direction);
+		enum wlr_direction direction);
 
 void output_add_workspace(struct sway_output *output,
 		struct sway_workspace *workspace);

include/sway/tree/container.h

@@ -36,7 +36,6 @@ struct sway_output;
 struct sway_workspace;
 struct sway_view;
 
-enum movement_direction;
 enum wlr_direction;
 
 struct sway_container_state {
@@ -287,8 +286,6 @@ void container_detach(struct sway_container *child);
 void container_replace(struct sway_container *container,
 		struct sway_container *replacement);
 
-bool sway_dir_to_wlr(enum movement_direction dir, enum wlr_direction *out);
-
 struct sway_container *container_split(struct sway_container *child,
 		enum sway_container_layout layout);
 

include/util.h

@@ -7,15 +7,6 @@
 #include <wlr/types/wlr_output_layout.h>
 #include <xkbcommon/xkbcommon.h>
 
-enum movement_direction {
-	MOVE_LEFT,
-	MOVE_RIGHT,
-	MOVE_UP,
-	MOVE_DOWN,
-	MOVE_PARENT,
-	MOVE_CHILD,
-};
-
 /**
  * Wrap i into the range [0, max[
  */
@@ -77,6 +68,4 @@ bool parse_boolean(const char *boolean, bool current);
  */
 char* resolve_path(const char* path);
 
-bool sway_dir_to_wlr(enum movement_direction dir, enum wlr_direction *out);
-
 #endif