Revert "blktrace: Trace remapped requests correctly"

This reverts commit 1ed71e6b which is
commit 22c80aac upstream.

It breaks the Android GKI kernel abi, and is not needed for Android
devices, so revert it for now.  If it is needed for this branch, it can
come back later in an ABI-stable way.

Bug: 161946584
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I75de120370233d680e33d91d21ed55c2396ed2d0