ARM: dts: qcom: msm8960: drop 2nd clock frequency from timer

The driver reads only one clock frequency, and the schema does not
allow more than one frequency here.

Signed-off-by: David Heidelberg <[e-mail]>
Reviewed-by: Konrad Dybcio <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bjorn Andersson <[e-mail]>

arch/arm/boot/dts/qcom/qcom-msm8660.dtsi

···
 				     <GIC_PPI 1 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
 				     <GIC_PPI 2 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>;
 			reg = <0x02000000 0x100>;
-			clock-frequency = <27000000>,
-					  <32768>;
+			clock-frequency = <27000000>;
 			cpu-offset = <0x40000>;
 		};