Remove BTA_HF_CLIENT_SCO_LISTEN_E fallthrough

Remove unintended fallthrough.
Bug: 143901894
Test: connect SCO from both HF and AG.

Change-Id: Ifa5363479d4c844ed0b6a8585c25147b23156599
Merged-In: Ifa5363479d4c844ed0b6a8585c25147b23156599
diff --git a/system/bta/hf_client/bta_hf_client_sco.cc b/system/bta/hf_client/bta_hf_client_sco.cc
index faf970d..956b6d6 100644
--- a/system/bta/hf_client/bta_hf_client_sco.cc
+++ b/system/bta/hf_client/bta_hf_client_sco.cc
@@ -305,8 +305,7 @@
         case BTA_HF_CLIENT_SCO_LISTEN_E:
           /* create SCO listen connection */
           bta_hf_client_sco_create(client_cb, false);
-          /* TODO(b/143901894): Is this correct? */
-          [[fallthrough]];
+          break;
 
         case BTA_HF_CLIENT_SCO_OPEN_E:
           /* remove listening connection */