[automerger skipped] Revert "Add ramdisk_available to init_first_stage's deps" am: 4072dbc482 -s ours

am skip reason: Merged-In I7436b8dd11ca747459d442b3d754c5367a9eb721 with SHA-1 35abebfab5 is already in history. Merged-In was found from reverted change.

Reverted change: https://googleplex-android-review.googlesource.com/c/platform/external/libchrome/+/15068059

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libchrome/+/15167740

Change-Id: Ifb5459ce0a81521a4f6a194d9c566194c2f69f4f