Revert "usb: typec: altmodes/displayport: Notify drm subsys of hotplug events"

This reverts commit f25a13d3 which is
commit 7f811394 upstream.

It breaks the android ABI and if this is needed in the future, can be
brought back in an abi-safe way.

Bug: 161946584
Change-Id: Ia85b72b88d6a6a5c0258a26c67484f367d724360
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>