diff --git a/gnss/2.1/IGnssCallback.hal b/gnss/2.1/IGnssCallback.hal
index f7b7477..da70742 100644
--- a/gnss/2.1/IGnssCallback.hal
+++ b/gnss/2.1/IGnssCallback.hal
@@ -24,20 +24,8 @@
  * the interfaces and passes a handle to the HAL.
  */
 interface IGnssCallback extends @2.0::IGnssCallback {
-    /**
-     * Flags for the gnssSetCapabilities callback.
-     */
-    @export(name = "", value_prefix = "GPS_CAPABILITY_")
-    enum Capabilities : @2.0::IGnssCallback.Capabilities {
-        /**
-         * GNSS supports measurement corrections
-         */
-        ANTENNA_INFO = 1 << 11,
-    };
 
-    /**
-     * Extends a GnssSvInfo, adding a basebandCN0DbHz.
-     */
+    /** Extends a GnssSvInfo, adding a basebandCN0DbHz. */
     struct GnssSvInfo {
         /**
          * GNSS satellite information for a single satellite and frequency.