Remove unused experiment flag frame-refs

Change-Id: If28aba78373f65f324e80589924e378e8453e3a4
diff --git a/build/cmake/aom_config_defaults.cmake b/build/cmake/aom_config_defaults.cmake
index 2332942..1798394 100644
--- a/build/cmake/aom_config_defaults.cmake
+++ b/build/cmake/aom_config_defaults.cmake
@@ -141,7 +141,6 @@
 set(CONFIG_FILTER_INTRA 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_FP_MB_STATS 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_FRAME_MARKER 1 CACHE NUMBER "AV1 experiment flag.")
-set(CONFIG_FRAME_REFS 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_FRAME_SIGN_BIAS 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_FRAME_SIZE 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_FWD_KF 0 CACHE NUMBER "AV1 experiment flag.")
diff --git a/build/cmake/aom_experiment_deps.cmake b/build/cmake/aom_experiment_deps.cmake
index 2813544..5808aae 100644
--- a/build/cmake/aom_experiment_deps.cmake
+++ b/build/cmake/aom_experiment_deps.cmake
@@ -108,12 +108,6 @@
     endif ()
   endif ()
 
-  if (CONFIG_FRAME_REFS)
-    if (NOT CONFIG_FRAME_MARKER)
-      change_config_and_warn(CONFIG_FRAME_MARKER 1 CONFIG_FRAME_REFS)
-    endif ()
-  endif ()
-
   if (CONFIG_FRAME_SIGN_BIAS)
     if (NOT CONFIG_FRAME_MARKER)
       change_config_and_warn(CONFIG_FRAME_MARKER 1 CONFIG_FRAME_SIGN_BIAS)
diff --git a/configure b/configure
index 7662f49..931ecef 100755
--- a/configure
+++ b/configure
@@ -310,7 +310,6 @@
     mfmv
     frame_marker
     jnt_comp
-    frame_refs
     frame_sign_bias
     ext_skip
     obu
@@ -539,7 +538,6 @@
     enabled intra_edge && enable_feature ext_intra
     enabled mfmv && enable_feature frame_marker
     enabled jnt_comp && enable_feature frame_marker
-    enabled frame_refs && enable_feature frame_marker
     enabled frame_sign_bias && enable_feature frame_marker
     enabled ext_skip && enable_feature frame_marker
     enabled loopfilter_level && enable_feature parallel_deblocking