convert C-style (void) parameter lists to C++ style ()

src/util.cpp

@@ -1248,7 +1248,7 @@ fs::path AbsPathForConfigVal(const fs::path& path, bool net_specific)
     return fs::absolute(path, GetDataDir(net_specific));
 }
 
-int ScheduleBatchPriority(void)
+int ScheduleBatchPriority()
 {
 #ifdef SCHED_BATCH
     const static sched_param param{0};