Add alternative support for QUERY_ALL_PACKAGES in play flavor

app/src/otherLegacy/java/io/nekohasekai/sfa/vendor/Vendor.kt

@@ -95,10 +95,6 @@ object Vendor : VendorInterface {
         return null
     }
 
-    override fun isPerAppProxyAvailable(): Boolean {
-        return true
-    }
-
     override fun supportsTrackSelection(): Boolean {
         return true
     }