ARM: dts: msm: Remove governor from kona video

Devfreq governors have been replaced with internal
handling. New entry qcom,mode decides how the BW
is calculated. OPP tables are not required.

CRs-Fixed: 2384822
Change-Id: Ib566c76616d336f84a4fe0cc808502439de0b356
Signed-off-by: Chinmay Sawarkar <chinmays@codeaurora.org>
Signed-off-by: Vikash Garodia <vgarodia@codeaurora.org>