Revert "init: poll in first stage mount if required devices are not found"

Bug: 62864413

This reverts commit 5f4e8eac8a0db87a43ed7a930103f4241c22d479.

Change-Id: I6f35b920bb52875c8ef430d3e20b205fda5165e8
diff --git a/init/devices.h b/init/devices.h
index 62aef2e..3f2cde4 100644
--- a/init/devices.h
+++ b/init/devices.h
@@ -17,11 +17,8 @@
 #ifndef _INIT_DEVICES_H
 #define _INIT_DEVICES_H
 
-#include <sys/stat.h>
-
-#include <chrono>
 #include <functional>
-#include <optional>
+#include <sys/stat.h>
 
 enum coldboot_action_t {
     // coldboot continues without creating the device for the uevent
@@ -56,10 +53,8 @@
                          mode_t perm, unsigned int uid,
                          unsigned int gid, unsigned short prefix,
                          unsigned short wildcard);
+int get_device_fd();
 
 char** get_block_device_symlinks(struct uevent* uevent);
 
-void device_poll(const coldboot_callback& callback = nullptr,
-                 const std::optional<std::chrono::milliseconds> relative_timeout = {});
-
 #endif	/* _INIT_DEVICES_H */