Delete some redundant/switched out code

Some #if FALSE's trimmed.
Redundant check of s!=0 within a while (s!=0) removed.

c/edit

@@ -132,9 +132,6 @@ static void arcedit__clickproc(wimp_i i) {
 #define MQuit 3
 #endif
 
-#if FALSE
-#define MTask  1
-#endif
 #define MText  1
 #define MBASIC 2
 #define MObey  3
@@ -178,15 +175,6 @@ static void arcedit__iconmenuproc(void *handle, char *hit) {
 #endif
     case MCreate:
       switch (hit[1]) {
-#if FALSE
-      case MTask:
-        if (wimpt_complain(
-              os_cli(
-                "RMEnsure TaskWindow 0 RMLoad <Edit$Dir>.Task")) == 0) {
-          message_taskwindow("ShellCLI_Task");
-        };
-        break;
-#endif
       case MText:
         s = txtedit_new("", 0xfff);
         break;
@@ -217,14 +205,9 @@ static void arcedit__iconmenuproc(void *handle, char *hit) {
       break;
     case MQuit:
       tracef0("quit\n");
-  #if FALSE
-      if (dboxquery("Quit Edit: are you sure?") == dboxquery_YES) {
-        exit(0);
-      };
-  #else
       if (txtedit_mayquit()) exit(0);
-  #endif
-    };
+      break;
+    }
 }
 
 static menu edit__main_menu_maker(void *handle)
@@ -399,7 +382,7 @@ static void arcedit__bkg_events(wimp_eventstr *e, void *handle) {
        s = txtedit_getstates();
        while (s != 0)
        {
-          if (s != 0 && !cistrcmp(s->filename, e->data.msg.data.print.name))
+          if (!cistrcmp(s->filename, e->data.msg.data.print.name))
              break;
           s = s->next;
        }
@@ -484,8 +467,6 @@ void edit__hotkeys(wimp_eventstr *e, void *handle) {
     if (e->e == wimp_EKEY) {
       if (e->data.key.chcode == akbd_Fn + 7) {
         werr(FALSE, "hot key select copy!"); /* test message. */
-#if FALSE
-#endif
       } else {
         /* not recognised: pass it on. */
         wimpt_noerr(wimp_processkey(e->data.key.chcode));