Revert "interconnect: qcom: x1e80100: enable QoS configuration"

This reverts commit 5a8b2cc36e796d595c9d97eab23c2be22805cc1c.

Since the introduction of this QoS change, X1 machines based on the
Purwa SoC (such as the Lenovo Mini X) take a hard reset at boot time.

Other machines based on Hamoa (such as the X1E001DE Snapdragon Devkit)
end-up with a similar hard reset while under load, most likely due to
the PCIe ports being starved of traffic.

Revert the whole thing until someone figures out what magic parameters
allow QoS to work in a sensible manner, as a usable machine is somehow
preferable to one that crashes efficiently.

Link: https://lore.kernel.org/all/apgeBNSiP01YfNcs@google.com
Link: https://lore.kernel.org/all/86ld9d4h4n.wl-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: Georgi Djakov <djakov@kernel.org>
Cc: Raviteja Laggyshetty <raviteja.laggyshetty@oss.qualcomm.com>
Cc: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Cc: Abel Vesa <abelvesa@kernel.org>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Mostafa Saleh <smostafa@google.com>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Reviewed-by: Mostafa Saleh <smostafa@google.com>
Tested-by: Mostafa Saleh <smostafa@google.com>
Closes: https://krzk.eu/#/builders/102/builds/70/steps/23/logs/warnings__3_
Link: https://patch.msgid.link/20260915123703.3228329-1-maz@kernel.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>

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