arm64: dts: qcom: msm8996: Remove AGGRE2 clock from SLPI

The AGGRE2 clock is a clock for the entire AGGRE2 bus, managed from
within the interconnect driver. Attaching it to SLPI was a total hack.
Get rid of it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230721-topic-rpm_clk_cleanup-v3-8-a66e698932e3@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>