check: Disable mssdemux unit test for now

This is for the same reason as the dash tests. This should ideally
be converted to gst-validate tests. These tests randomly timeout also
due to the tests doing seeks from the streaming thread (sic).

tests/check/Makefile.am

@@ -232,6 +232,7 @@ VALGRIND_TESTS_DISABLE = \
 #            actually looks at the data and doesn't like randomness
 noinst_PROGRAMS = \
 	pipelines/streamheader \
+	$(check_mssdemux) \
 	$(check_dash_demux) \
 	$(check_ipcpipeline) \
 	$(check_neon)
@@ -247,7 +248,6 @@ check_PROGRAMS = \
 	$(check_voamrwbenc) \
 	$(check_mpeg2enc)  \
 	$(check_mplex)     \
-	$(check_mssdemux) \
 	$(check_ofa)        \
 	$(check_kate)  \
 	$(check_opencv) \

tests/check/meson.build

@@ -43,7 +43,6 @@ base_tests = [
   [['elements/mpeg4videoparse.c'], false, [libparser_dep]],
   [['elements/mpegtsmux.c']],
   [['elements/mpegvideoparse.c'], false, [libparser_dep]],
-  [['elements/mssdemux.c', 'elements/test_http_src.c', 'elements/adaptive_demux_engine.c', 'elements/adaptive_demux_common.c'], not xml28_dep.found(), [xml28_dep]],
   [['elements/mxfdemux.c']],
   [['elements/mxfmux.c']],
   [['elements/netsim.c']],