mpeg2 extractor no longer needs libstagefright

Bug: 65851881
Test: build
Change-Id: Ibb0e8f8bbd44ef3db618988665b6e56072f4b799
diff --git a/media/extractors/mpeg2/Android.bp b/media/extractors/mpeg2/Android.bp
index c6bb40d..18f9ee4 100644
--- a/media/extractors/mpeg2/Android.bp
+++ b/media/extractors/mpeg2/Android.bp
@@ -22,7 +22,6 @@
         "liblog",
         "libmedia",  // Needed for IStreamListener
         "libmediaextractor",
-        "libstagefright",  // Needed for AnotherPacketSource and more
         "libstagefright_foundation",
         "libutils",
     ],