Remove apex_available whitelist for the extservices APEX

The marked library(ies) were available to the APEX via the
hand-written whitelist in build/soong/apex/apex.go. Trying to remove the
whitelist by adding apex_available property to the Android.bp of the
libraries.

Bug: 150999716
Test: m
Merged-In: I827d604c7e5a469a8b8a6d5a4b7917f2eaca48ca
Change-Id: I827d604c7e5a469a8b8a6d5a4b7917f2eaca48ca

apex/apex.go

@@ -245,14 +245,7 @@ func makeApexAvailableWhitelist() map[string][]string {
 	// Module separator
 	//
 	m["com.android.extservices"] = []string{
-		"flatbuffer_headers",
-		"liblua",
-		"libtextclassifier",
-		"libtextclassifier_hash_static",
-		"libtflite_static",
-		"libutf",
 		"libz_current",
-		"tensorflow_headers",
 	}
 	//
 	// Module separator