Remove health backup instance from the manifest.

This HAL is served from the system.img, so it shouldn't be in
this manifest.

I should have manually removed it, but I filed b/71802285 so that
more tooling is smart enough not to add it.

Bug: 71707530
Test: vts_treble_vintf_test case that was failing is now passing.
Change-Id: I4e5d9bf8120e9fb087188587f18a338a372a2af2
(cherry picked from commit 151b5b3a0896c4d4d0f1a5e5b3411c551fbeccb3)
1 file changed