Revert "init: create /dev/urandom, /dev/random in first stage."

This reverts commit ab4fbe1b4fe1c7581339e384929851a5e6b944b7.

Bug: http://b/31251721
Change-Id: I43e68d1bd819d0f9f7d107865a33ec892975d956
diff --git a/init/init.cpp b/init/init.cpp
index feaee0d..957527b 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -588,8 +588,6 @@
         mount("sysfs", "/sys", "sysfs", 0, NULL);
         mount("selinuxfs", "/sys/fs/selinux", "selinuxfs", 0, NULL);
         mknod("/dev/kmsg", S_IFCHR | 0600, makedev(1, 11));
-        mknod("/dev/random", S_IFCHR | 0666, makedev(1, 8));
-        mknod("/dev/urandom", S_IFCHR | 0666, makedev(1, 9));
         early_mount();
     }
 
@@ -640,8 +638,6 @@
     restorecon("/dev");
     restorecon("/dev/kmsg");
     restorecon("/dev/socket");
-    restorecon("/dev/random");
-    restorecon("/dev/urandom");
     restorecon("/dev/__properties__");
     restorecon("/property_contexts");
     restorecon_recursive("/sys");