gst-plugins-good: remove dependencies for matroska plugin

This was forgotten when adding config options for zlib and bzip2. The
matroska plugin doesn't need these dependencies, they are optional.

Signed-off-by: Markus Heidelberg <markus.heidelberg@web.de>

package/multimedia/gst-plugins-good/gst-plugins-good.mk

@@ -171,7 +171,6 @@ endif
 
 ifeq ($(BR2_PACKAGE_GST_PLUGINS_GOOD_PLUGIN_MATROSKA),y)
 GST_PLUGINS_GOOD_CONF_OPT += --enable-matroska
-GST_PLUGINS_GOOD_DEPENDENCIES += zlib bzip2
 else
 GST_PLUGINS_GOOD_CONF_OPT += --disable-matroska
 endif