[automerger skipped] Revert "Add ramdisk_available to init_first_stage's deps" am: f4db89ce07 -s ours am: 554553dddb -s ours am: 703f9fa38e -s ours

am skip reason: Merged-In I044a075b7f8faf75e3ff8ef25ae01afc2aac5a32 with SHA-1 03001bd1cf is already in history. Merged-In was found from reverted change.

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libevent/+/15167750

Change-Id: Ib0608af7d2a96ca3b04c76786e24eb05050e90af