Remove custom rans types

(cherry picked from aom/master commit 11206c60d930be9d29100567aa67f2a65463852a)

Includes renames in a bunch of places not handled by the original
due to differing tree states.

Change-Id: Ic74d9d8850b8c80a51e55e425bbf472a67e2653f

av1/encoder/tokenize.h

@@ -37,7 +37,7 @@ typedef struct {
 typedef struct {
   const aom_prob *context_tree;
 #if CONFIG_ANS
-  const rans_lut *token_cdf;
+  const aom_cdf_prob (*token_cdf)[ENTROPY_TOKENS];
 #endif  // CONFIG_ANS
   EXTRABIT extra;
   uint8_t token;