Revert "[core] Clear CPU affinity for worker processes (ray-project#3…

…6816)"

This reverts commit 92cc3c3.

src/ray/util/process.cc

@@ -191,13 +191,6 @@ class ProcessFD {
         _exit(pid2 == -1 ? errno : 0);  // Parent of grandchild; must exit
       }
       // This is the spawned process. Any intermediate parent is now dead.
-
-      // Clear any CPU affinity that might have been inherited from the raylet.
-      // See https://github.com/ray-project/ray/issues/35984.
-      cpu_set_t mask;
-      CPU_ZERO(&mask);
-      sched_setaffinity(0, sizeof(mask), &mask);
-
       pid_t my_pid = getpid();
       if (write(pipefds[1], &my_pid, sizeof(my_pid)) == sizeof(my_pid)) {
         execvpe(