Unexport libvlc_media_player_new_from_input_thread

This was clearly a bug, as it is documented as an internal function,
and sues internal types

src/Makefile.am

@@ -176,7 +176,7 @@ libvlc_la_LIBADD = `$(VLC_CONFIG) -libs libvlc` \
 	libvlccore.la ../compat/libcompat.la
 libvlc_la_CFLAGS = `$(VLC_CONFIG) --cflags libvlc`
 libvlc_la_LDFLAGS = $(AM_LDFLAGS) `$(VLC_CONFIG) --ldflags libvlc` \
-	-version-info 4:0:2 \
+	-version-info 5:0:0 \
 	-export-symbols $(srcdir)/libvlc.sym
 libvlc_la_DEPENDENCIES = libvlc.sym libvlccore.la
 if HAVE_WIN32

src/libvlc.sym

@@ -142,7 +142,6 @@ libvlc_media_player_has_vout
 libvlc_media_player_is_seekable
 libvlc_media_player_is_playing
 libvlc_media_player_new
-libvlc_media_player_new_from_input_thread
 libvlc_media_player_new_from_media
 libvlc_media_player_next_chapter
 libvlc_media_player_pause