ARM: dts: msm: remove the t-clk-post and t-clk-pre timings for blair QRD

The qcom,mdss-dsi-t-clk-post and qcom,mdss-dsi-t-clk-pre panel
properties are not required for DSI ctrl v2.3.0 and above, using
DSI phy v4.0.0 and above. As the Blair is reusing the display
nodes from the Holi target, these two properties are getting
included automatically.
If these properties are defined, the DSI ctrl programs the
DSI_CLKOUT_TIMING_CTRL register for all the DSI PHY versions,
that is not recommended as per the DSI HPG.
We don't need these two for the Blair, remove them.

Change-Id: Ic4e1a3a306e4aa191cd7cb3b6017cd3b2f226e8e