commands/bar: remove left and right from allowed positions

"left" and "right" are not allowed positions for swaybar, remove them.

sway/commands/bar/position.c

@@ -12,7 +12,7 @@ struct cmd_results *bar_cmd_position(int argc, char **argv) {
 	if (!config->current_bar) {
 		return cmd_results_new(CMD_FAILURE, "position", "No bar defined.");
 	}
-	char *valid[] = { "top", "bottom", "left", "right" };
+	char *valid[] = { "top", "bottom" };
 	for (size_t i = 0; i < sizeof(valid) / sizeof(valid[0]); ++i) {
 		if (strcasecmp(valid[i], argv[0]) == 0) {
 			wlr_log(WLR_DEBUG, "Setting bar position '%s' for bar: %s",