Remove rm -rf of MapRuleStat_boost.mmap on startup

Dynamic shared-memory vectors no longer cause segfaults from
unbounded growth, so the brute-force file deletion on every
start is unnecessary. Consistent with e21b2af which removed
the same pattern for TaskData_boost.mmap.

eqpalg/eqpalg.cpp

@@ -20,8 +20,6 @@ eqpalg::~eqpalg() {
 }
 
 int eqpalg::start() {
-  string ss0 = "rm -rf /users/dsc/shm/MapRuleStat_boost.mmap";
-  system(ss0.c_str());
   logger_->Info() << "start eqpalg." << endl;
   // 启动ConnectionMag，这个一定不要去除，否则内部很多邹师傅写的库都无法正常工作
   con_mag_ = std::make_shared<ConnectionMag>();