Revert^2 "Upgrade zerocopy to 0.7.5" am: 7d80d53b47

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/zerocopy/+/2787226

Change-Id: Ia7a02dc8afc4d98886c382b4f7c52e763902c704
Signed-off-by: Automerger Merge Worker <[email protected]>