ARM: dts: msm: remove deprecated PCIe AUX CLK frequency for lahaina

PCIe internal AUX clock frequency setting has been change from
boolean to u32. On Lahaina, the reset value of this settings is
correct and does not need the new devicetree entry to override
it. Therefore, remove the deprecated entry for Lahaina.

Change-Id: I4b0eb9f3e98ffdf894d4245212e64af618ac80e0