Remove unused response and dispatch functions.

Test: Basic telephony sanity
Bug: 32020264
Change-Id: I732234a22328a1bfcb603bb020547f543b6fd766
diff --git a/libril/ril_unsol_commands.h b/libril/ril_unsol_commands.h
index 8ffcef5..948eaeb 100644
--- a/libril/ril_unsol_commands.h
+++ b/libril/ril_unsol_commands.h
@@ -55,7 +55,7 @@
     {RIL_UNSOL_UICC_SUBSCRIPTION_STATUS_CHANGED, radio::subscriptionStatusChangedInd, WAKE_PARTIAL},
     {RIL_UNSOL_SRVCC_STATE_NOTIFY, radio::srvccStateNotifyInd, WAKE_PARTIAL},
     {RIL_UNSOL_HARDWARE_CONFIG_CHANGED, radio::hardwareConfigChangedInd, WAKE_PARTIAL},
-    {RIL_UNSOL_DC_RT_INFO_CHANGED, responseDcRtInfo, WAKE_PARTIAL},
+    {RIL_UNSOL_DC_RT_INFO_CHANGED, NULL, WAKE_PARTIAL},
     {RIL_UNSOL_RADIO_CAPABILITY, radio::radioCapabilityIndicationInd, WAKE_PARTIAL},
     {RIL_UNSOL_ON_SS, radio::onSupplementaryServiceIndicationInd, WAKE_PARTIAL},
     {RIL_UNSOL_STK_CC_ALPHA_NOTIFY, radio::stkCallControlAlphaNotifyInd, WAKE_PARTIAL},