[Audiosharing] Clean up audio sharing aconfigs in Settings

Bug: 324023639
Test: manual
Change-Id: I4860390590f4f312df7d03490122870488dcf4fe

aconfig/settings_connecteddevice_flag_declarations.aconfig

@@ -8,20 +8,6 @@ flag {
   bug: "299405720"
 }
 
-flag {
-  name: "enable_le_audio_sharing"
-  namespace: "pixel_cross_device_control"
-  description: "Gates whether to enable LE audio sharing"
-  bug: "305620450"
-}
-
-flag {
-  name: "enable_le_audio_qr_code_private_broadcast_sharing"
-  namespace: "pixel_cross_device_control"
-  description: "Gates whether to enable LE audio private broadcast sharing via QR code"
-  bug: "308368124"
-}
-
 flag {
   name: "enable_auth_challenge_for_usb_preferences"
   namespace: "safety_center"
@@ -41,4 +27,4 @@ flag {
   namespace: "dck_framework"
   description: "Hide exclusively managed Bluetooth devices in BT settings menu."
   bug: "322285078"
-}
+}