[grilo-plugins] tests: Disable metrolyrics test while it's broken

[Bastien Nocera <hadess src gnome org>]

commit 4130f1d7006d62b3115923971dddce36eaa08848
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Apr 24 15:13:06 2018 +0200

    tests: Disable metrolyrics test while it's broken
    
    https://bugzilla.gnome.org/show_bug.cgi?id=795361

 tests/lua-factory/sources/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/lua-factory/sources/Makefile.am b/tests/lua-factory/sources/Makefile.am
index 3b35041..dcb379a 100644
--- a/tests/lua-factory/sources/Makefile.am
+++ b/tests/lua-factory/sources/Makefile.am
@@ -7,7 +7,7 @@
 
 include $(top_srcdir)/gtester.mk
 
-TEST_PROGS +=  \
+noinst_PROGS = \
        test_lua_metrolyrics
 
 test_lua_factory_defines =     \