Revert "ARM: dts: msm: Pass usb controller id for 8996"

This reverts commit 745e97d5.

Remove unique core IDs of the USB controllers on MSM8996.

Change-Id: Ie929c8c11831422e32e8b673abd8c20dfbcc79c5
Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>