Revert "arm64: dts: qcom: sm8350: Specify clock-frequency for arch timer"

This reverts commit ed9500c1.

The clock-frequency property was meant to aid platforms with broken firmwares
that don't set up the timer properly on their own. Don't include it where it is
not the case.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211202004328.459899-1-konrad.dybcio@somainline.org

arch/arm64/boot/dts/qcom/sm8350.dtsi

@@ -3193,6 +3193,5 @@ timer {
 			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
 			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
-		clock-frequency = <19200000>;
 	};
 };