drm/dp_mst: Remove rebase-detritus in VCPI helper kernel-docs

Looks like when making the final revision of:

commit 022debad ("drm/atomic: Add drm_atomic_state->duplicated")

I forgot to remove some of the comments that I had added to
drm_dp_atomic_find_vcpi_slots() and drm_dp_atomic_release_vcpi_slots()
that were no longer valid due to us having removed the state->duplicated
checks from each function. This also introduced an error while building
the docs with sphinx:

./drivers/gpu/drm/drm_dp_mst_topology.c:3100: WARNING: Inline literal
start-string without end-string.

So, fix that by just removing the kerneldoc comments.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Fixes: 022debad ("drm/atomic: Add drm_atomic_state->duplicated")
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190202002023.29665-5-lyude@redhat.com

drivers/gpu/drm/drm_dp_mst_topology.c

@@ -3097,10 +3097,6 @@ static int drm_dp_init_vcpi(struct drm_dp_mst_topology_mgr *mgr,
  * @port as needed. It is not OK however, to call this function and
  * drm_dp_atomic_release_vcpi_slots() in the same atomic check phase.
  *
- * When &drm_atomic_state.duplicated is set to %true%, this function will not
- * perform any error checking and will instead simply return the previously
- * recorded VCPI allocations.
- *
  * See also:
  * drm_dp_atomic_release_vcpi_slots()
  * drm_dp_mst_atomic_check()
@@ -3185,11 +3181,6 @@ EXPORT_SYMBOL(drm_dp_atomic_find_vcpi_slots);
  * drm_dp_atomic_find_vcpi_slots() on the same @port in a single atomic check
  * phase.
  *
- * When &drm_atomic_state.duplicated is set, this function will not
- * modify the VCPI allocations in &drm_dp_mst_topology_state.vcpis, so that
- * those VCPI allocations may be restored as-is from the duplicated state. In
- * this scenario, this function will always return 0.
- *
  * See also:
  * drm_dp_atomic_find_vcpi_slots()
  * drm_dp_mst_atomic_check()