Revert "drm: call clear_payload_id_table when mst mode is enabled"

This reverts commit 21d5c248, which was
resulting in significant delays (approximately 4-10 seconds) when
establishing a MST session over DisplayPort.

Change-Id: I8b2898fde94313214a977a755c983af2a8d99d63
Signed-off-by: Xiaowen Wu <wxiaowen@codeaurora.org>