arm64: dts: qcom: x1-dell-thena: remove dp data-lanes

arm64: dts: qcom: x1-dell-thena: remove dp data-lanes

The commit 458de584248a ("arm64: dts: qcom: x1e80100: move dp0/1/2
data-lanes to SoC dtsi") has landed before this file was added, so
the data-lanes lines here remained.

Remove them to enable 4-lane DP on the X1E Dell Inspiron/Latitude.

Fixes: e7733b42111c ("arm64: dts: qcom: Add support for Dell Inspiron 7441 / Latitude 7455")
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Val Packett <val@packett.cool>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251012224909.14988-1-val@packett.cool
Signed-off-by: Bjorn Andersson <andersson@kernel.org>