Remove debug messages from VM

vm/code_block.cpp

@@ -329,7 +329,6 @@ void *get_rel_symbol(array *literals, cell index)
 				return sym;
 			else
 			{
-				printf("%s\n",name);
 				return (void *)undefined_symbol;
 			}
 		}

vm/os-windows.cpp

@@ -94,7 +94,6 @@ const vm_char *vm_executable_path()
 PRIMITIVE(existsp)
 {
 	vm_char *path = untag_check<byte_array>(dpop())->data<vm_char>();
-	wprintf(L"existsp: path is %s\n",path);
 	box_boolean(windows_stat(path));
 }