Revert "bpf: track changes_pkt_data property for global functions"

This reverts commit 1d572c60 which is
commit 51081a3f upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I3c570f3e9aa480007914e6ad7a166afe1dbfba55
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>