Remove gf_groups from configure

Change-Id: I3160b55f19c3d29f2d22a1b106152456f014cf26

build/cmake/aom_config_defaults.cmake

@@ -150,7 +150,6 @@ set(CONFIG_FP_MB_STATS 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_FRAME_MARKER 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_FRAME_SIZE 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_FRAME_SUPERRES 0 CACHE NUMBER "AV1 experiment flag.")
-set(CONFIG_GF_GROUPS 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_GLOBAL_MOTION 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_HASH_ME 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_INTERINTRA 1 CACHE NUMBER "AV1 experiment flag.")

configure

@@ -267,7 +267,6 @@ EXPERIMENT_LIST="
     wedge
     compound_segment
     ext_refs
-    gf_groups
     global_motion
     new_quant
     supertx