GUACAMOLE-249: Remove prototype for guac_rdp_bitmap_decompress(), which is no longer defined nor used.
GUACAMOLE-249: Remove prototype for guac_rdp_bitmap_decompress(), which is no longer defined nor used.

mike-jumper/incubator-guacamole-server,apache/guacamole-server,apache/guacamole-server,glyptodon/guacamole-server,glyptodon/guacamole-server,mike-jumper/incubator-guacamole-server,apache/guacamole-server,mike-jumper/incubator-guacamole-server,mike-jumper/incubator-guacamole-server,glyptodon/guacamole-server