Revert "i2c: acpi: Unbind mux adapters before delete"

This reverts commit b1574c8c which is
commit 3f858bbf 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: Idee931998e80ee3ce1c11fa19a49daeea6388fbb
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>