Remove old incidentd socket allow.

Forgotten cleanup item.

Bug: 35870313
Test: making sepolicy (neverallows resolved at compile time)
Change-Id: If9a583c4508db63356869502ec374727afa84b0b

public/domain.te

@@ -749,7 +749,6 @@ full_treble_only(`
     -mdnsd # netdomain needs this
     userdebug_or_eng(`-su') # communications with su are permitted only on userdebug or eng builds
     -init
-    -incidentd # TODO(b/35870313): Remove incidentd from this list once vendor domains no longer declare Binder services
     -tombstoned # TODO(b/36604251): Remove tombstoned from this list once mediacodec (OMX HAL) no longer declares Binder services
   });
 ')