d_a_npc debug work (#2863)

* Remove d_a_npc3.cpp

This file appears to not actually be real and the asserts in its
functions all reference d_a_npc2.cpp instead.

* d_a_npc debug almost matching

include/SSystem/SComponent/c_lib.h

@@ -92,7 +92,7 @@ T cLib_getRndValue(T min, T range) {
 template <typename T>
 T cLib_calcTimer(T* value) {
     if (*(T*)value != 0) {
-        *value = *value - 1;
+        --*value;
     }
     return *value;
 }