Revert "bpf: check changes_pkt_data property for extension programs"

This reverts commit 7197fc4a which is
commit 81f6d053 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: Ic18aced32f0a5aa6ffa03d264a5a59c7b915e840
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>