Revert "usb: typec: altmodes/displayport: Signal hpd low when exiting mode"

This reverts commit 9ed14f80 which is
commit 89434b06 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: I4b22c70ef3ba8b03807052be2d4cdd5d060f3f76
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>