dt-bindings: interconnect: Remove sc7180/sdx55 ipa compatibles

These interconnects are modeled as clks, not interconnects, therefore
remove the compatibles from the binding as they're unused.

Cc: Alex Elder <[e-mail]>
Cc: Taniya Das <[e-mail]>
Cc: Mike Tipton <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Georgi Djakov <[e-mail]>

Documentation/devicetree/bindings/interconnect/qcom,rpmh.yaml

···
       - qcom,sc7180-config-noc
       - qcom,sc7180-dc-noc
       - qcom,sc7180-gem-noc
-      - qcom,sc7180-ipa-virt
       - qcom,sc7180-mc-virt
       - qcom,sc7180-mmss-noc
       - qcom,sc7180-npu-noc
···
       - qcom,sdm845-mem-noc
       - qcom,sdm845-mmss-noc
       - qcom,sdm845-system-noc
-      - qcom,sdx55-ipa-virt
       - qcom,sdx55-mc-virt
       - qcom,sdx55-mem-noc
       - qcom,sdx55-system-noc