bta: Pass the correct UUID array size in bta_ag_do_disc

Bug: 113164621
Test: Connect HSP from a device to the phone
Change-Id: Iec875cd165ad1cea64c307602bb00b623967c7c7
(cherry picked from commit 9645b5dd62c8166f10798335768aa2a6c3e05e4c)
diff --git a/bta/ag/bta_ag_sdp.cc b/bta/ag/bta_ag_sdp.cc
index 8ff39fd..5ab1215 100644
--- a/bta/ag/bta_ag_sdp.cc
+++ b/bta/ag/bta_ag_sdp.cc
@@ -470,7 +470,6 @@
 
     if (p_scb->hsp_version >= HSP_VERSION_1_2) {
       uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_HEADSET_HS);
-      num_uuid = 2;
     } else {
       /* Legacy from HSP v1.0 */
       uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_HEADSET);