Remove build script references to test_ts_context.

tests/Makefile.am

@@ -18,7 +18,6 @@ if !ON_MINGW
 noinst_PROGRAMS += test_shutdown_stress \
                    test_pair_ipc \
                    test_reqrep_ipc \
-                   test_ts_context \
                    test_timeo
 endif
 
@@ -38,7 +37,6 @@ test_shutdown_stress_SOURCES = test_shutdown_stress.cpp
 test_pair_ipc_SOURCES = test_pair_ipc.cpp testutil.hpp
 test_reqrep_ipc_SOURCES = test_reqrep_ipc.cpp testutil.hpp
 test_timeo_SOURCES = test_timeo.cpp
-test_ts_context_SOURCES = test_ts_context.cpp
 endif
 
 TESTS = $(noinst_PROGRAMS)