drm/i915: Remove warning from the rps worker

drm/i915: Remove warning from the rps worker

In commit d2db968d9e5f ("drm/i915: Drop i915_request.lock requirement
for intel_rps_boost()"), we decoupled the rps worker from the pm so
that we could avoid the synchronization penalty which makes the
assertion liable to run too early. Which makes warning invalid hence
removed.

Fixes: d2db968d9e5f ("drm/i915: Drop i915_request.lock requirement for intel_rps_boost()")
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914090412.1393498-1-tejaskumarx.surendrakumar.upadhyay@intel.com
(cherry picked from commit a837a0686308d95ad9c48d32b4dfe86a17dc98c2)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>