Revert "Print stack trace upon exceptions"

Ain't nobody got time for link/cmake skullduggery.

This reverts commit fff238ec94.

tests/core_tests/tx_validation.cpp

@@ -156,7 +156,7 @@ namespace
       }
     }
 
-    throw tools::runtime_error("invalid public key wasn't found");
+    throw std::runtime_error("invalid public key wasn't found");
     return crypto::public_key();
   }
 }