drm/i915: Fix conflict resolution from backmerge of v4.8-rc8 to drm-next

The conflict resolution of v4.8-rc8 backmerge to drm-next pulled back in
a few lines of dead code due to the code movement around
i915_gem_reset(), fix that up.

Fixes: ca09fb9f60b5 ("Merge tag 'v4.8-rc8' into drm-next")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161010125017.23911-1-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/i915_gem.c

@@ -2616,8 +2616,6 @@ static void i915_gem_reset_engine(struct intel_engine_cs *engine)
 	list_for_each_entry_continue(request, &engine->request_list, link)
 		if (request->ctx == incomplete_ctx)
 			reset_request(request);
-
-	engine->i915->gt.active_engines &= ~intel_engine_flag(engine);
 }
 
 void i915_gem_reset(struct drm_i915_private *dev_priv)
@@ -2628,7 +2626,6 @@ void i915_gem_reset(struct drm_i915_private *dev_priv)
 
 	for_each_engine(engine, dev_priv)
 		i915_gem_reset_engine(engine);
-	mod_delayed_work(dev_priv->wq, &dev_priv->gt.idle_work, 0);
 
 	i915_gem_restore_fences(&dev_priv->drm);