Remove CDF_STORAGE_REDUCTION experiment

This experiment has been abandonned for AV1.

Change-Id: Ibaa56283683b573885f304555965a6a4c3cef73e
diff --git a/aom_dsp/prob.h b/aom_dsp/prob.h
index a24f8f7..999fb74 100644
--- a/aom_dsp/prob.h
+++ b/aom_dsp/prob.h
@@ -31,11 +31,7 @@
 typedef uint16_t aom_cdf_prob;
 
 #define CDF_SIZE(x) ((x) + 1)
-#if CONFIG_CDF_STORAGE_REDUCTION
-#define CDF_PROB_BITS 14
-#else
 #define CDF_PROB_BITS 15
-#endif
 #define CDF_PROB_TOP (1 << CDF_PROB_BITS)
 #define CDF_INIT_TOP 32768
 #define CDF_SHIFT (15 - CDF_PROB_BITS)
diff --git a/build/cmake/aom_config_defaults.cmake b/build/cmake/aom_config_defaults.cmake
index 1de2529..6d51252 100644
--- a/build/cmake/aom_config_defaults.cmake
+++ b/build/cmake/aom_config_defaults.cmake
@@ -90,7 +90,6 @@
 set(CONFIG_AMVR 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_AOM_QM 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_AOM_QM_EXT 0 CACHE NUMBER "AV1 experiment flag.")
-set(CONFIG_CDF_STORAGE_REDUCTION 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_CDF_UPDATE_MODE 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_CFL 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_CICP 0 CACHE NUMBER "AV1 experiment flag.")