Remove unused type.

src/ui.c

@@ -699,6 +699,8 @@ _process_panel_list_selected_cb(void *data, Evas_Object *obj, void *event_info E
 
    ui->selected_pid = atoi(text);
 
+   ui->pid_cpu_time = 0;
+
    _process_panel_update(ui);
 
    ui->timer_pid = ecore_timer_add(ui->poll_delay, _process_panel_update, ui);

src/ui.h

@@ -117,14 +117,6 @@ typedef struct Ui
 
 } Ui;
 
-typedef struct Sys_Stats
-{
-   int    cpu_count;
-   double cpu_usage;
-   long   mem_total;
-   long   mem_used;
-} Sys_Stats;
-
 void
 ui_add(Evas_Object *win);