drm/i915: Remove gen6_ppgtt_unpin_all

gen6_ppgtt_unpin_all is unused, kill it.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211028125855.3281674-3-matthew.auld@intel.com

drivers/gpu/drm/i915/gt/gen6_ppgtt.c

@@ -404,17 +404,6 @@ void gen6_ppgtt_unpin(struct i915_ppgtt *base)
 		i915_vma_unpin(ppgtt->vma);
 }
 
-void gen6_ppgtt_unpin_all(struct i915_ppgtt *base)
-{
-	struct gen6_ppgtt *ppgtt = to_gen6_ppgtt(base);
-
-	if (!atomic_read(&ppgtt->pin_count))
-		return;
-
-	i915_vma_unpin(ppgtt->vma);
-	atomic_set(&ppgtt->pin_count, 0);
-}
-
 struct i915_ppgtt *gen6_ppgtt_create(struct intel_gt *gt)
 {
 	struct i915_ggtt * const ggtt = gt->ggtt;

drivers/gpu/drm/i915/gt/gen6_ppgtt.h

@@ -71,7 +71,6 @@ static inline struct gen6_ppgtt *to_gen6_ppgtt(struct i915_ppgtt *base)
 
 int gen6_ppgtt_pin(struct i915_ppgtt *base, struct i915_gem_ww_ctx *ww);
 void gen6_ppgtt_unpin(struct i915_ppgtt *base);
-void gen6_ppgtt_unpin_all(struct i915_ppgtt *base);
 void gen6_ppgtt_enable(struct intel_gt *gt);
 void gen7_ppgtt_enable(struct intel_gt *gt);
 struct i915_ppgtt *gen6_ppgtt_create(struct intel_gt *gt);