Revert "ANDROID: Incremental fs: Add zstd compression support"

This reverts commit 41a12dfc.

Set incfs back to rvc shipping incfs

Bug: 178509184
Test: incfs_test passes
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Change-Id: Ic975a83f60a0e5e3b16079358a65c0ef333a4c81