Revert "Add timer delete support to rild" DO NOT MERGE

This reverts commit 7edd07c9184a3abfaa3f4a161b74b3da9d7bbd56.
We need to revert here as this change is not in Gingerbread
or later branches.

Change-Id: I1b0d68655e3a91647f455cbc43f421db39f9aa55
diff --git a/libril/ril_event.cpp b/libril/ril_event.cpp
index c24c655..e40e72b 100644
--- a/libril/ril_event.cpp
+++ b/libril/ril_event.cpp
@@ -312,23 +312,13 @@
     dlog("~~~~ -ril_timer_add ~~~~");
 }
 
-// Remove event from timer list
-void ril_timer_delete(struct ril_event *tev)
-{
-    dlog("~~~~timer event delete=%x",(unsigned int)tev);
-    MUTEX_ACQUIRE();
-    removeFromList(tev);
-    MUTEX_RELEASE();
-}
-
 // Remove event from watch or timer list
 void ril_event_del(struct ril_event * ev)
 {
-    dlog("~~~~ +ril_event_del event= %x ~~~~", (unsigned int)ev);
+    dlog("~~~~ +ril_event_del ~~~~");
     MUTEX_ACQUIRE();
 
     if (ev->index < 0 || ev->index >= MAX_FD_EVENTS) {
-        MUTEX_RELEASE();
         return;
     }