ARM: dts: msm: remove rf_clk3_pin_clk in wil6210 node for sm8150

On sm8150 “rf_clk3_pin_clk” maps to RPMH_RF_CLK3_A.
That corresponds to an APPS active-only vote for RFCLK3A and not for
clock pin control enable.
Therefore, “rf_clk3_pin_clk” should not be controlled by 11ad device
on sm8150.

Change-Id: I13d59ae408439455224e0cc2d877038ea2aa31fd
Signed-off-by: Maya Erez <merez@codeaurora.org>