Fix tree to cdf index mapping

This fixes the mis-aligned cdf model derived from tree based
model. It resolves the compression performance regression in
dual filter, intra mode, inter mode, and transform block type
coding, when ec-multisymbol is enabled by default.

With dual filter enabled, the performance regression was 3.6%
loss for lowres. This fix brings the performance gains back to 1%
gains.

Change-Id: I80f5485386045908c152c9c11eeacbc650f1e324
diff --git a/aom_dsp/prob.h b/aom_dsp/prob.h
index a7fc544..9921623 100644
--- a/aom_dsp/prob.h
+++ b/aom_dsp/prob.h
@@ -139,8 +139,7 @@
     }                                                  \
   } while (0)
 
-void av1_indices_from_tree(int *ind, int *inv, int len,
-                           const aom_tree_index *tree);
+void av1_indices_from_tree(int *ind, int *inv, const aom_tree_index *tree);
 #endif
 
 DECLARE_ALIGNED(16, extern const uint8_t, aom_norm[256]);