freeswitch-stable: disable sofia-sip tests

freeswitch-stable: disable sofia-sip tests

Upstream commit 2dced93 "[sofia-sip] Build internal tests" enabled the
building of tests. One of them causes build failures on the build bots:

Making all in s2check
make[11]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/freeswitch-1.10.3.-release/libs/sofia-sip/s2check'
         COMPILE s2tcase.o
s2tcase.c: In function 's2_tcase_add_test':
s2tcase.c:60:27: error: passing argument 2 of '_tcase_add_test' from incompatible pointer type [-Werror=incompatible-pointer-types]
       _tcase_add_test(tc, tf, name, signo, 0, start, end);
                           ^~
In file included from s2tcase.c:35:
/builder/shared-workdir/build/sdk/staging_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/usr/include/check.h:331:69: note: expected 'const TTest *' {aka 'const struct TTest *'} but argument is of type 'TFun' {aka 'void (*)(int)'}
 CK_DLL_EXP void CK_EXPORT _tcase_add_test(TCase * tc, const TTest * ttest,
                                                       ~~~~~~~~~~~~~~^~~~~
s2tcase.c:60:31: error: passing argument 3 of '_tcase_add_test' makes integer from pointer without a cast [-Werror=int-conversion]
       _tcase_add_test(tc, tf, name, signo, 0, start, end);
                               ^~~~
In file included from s2tcase.c:35:
/builder/shared-workdir/build/sdk/staging_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/usr/include/check.h:332:47: note: expected 'int' but argument is of type 'const char *'
                                           int _signal, int allowed_exit_value,
                                           ~~~~^~~~~~~
s2tcase.c:60:7: error: too many arguments to function '_tcase_add_test'
       _tcase_add_test(tc, tf, name, signo, 0, start, end);
       ^~~~~~~~~~~~~~~
In file included from s2tcase.c:35:
/builder/shared-workdir/build/sdk/staging_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/usr/include/check.h:331:27: note: declared here
 CK_DLL_EXP void CK_EXPORT _tcase_add_test(TCase * tc, const TTest * ttest,
                           ^~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

I can't reproduce this at home. Not with a master checkout, not with a
current SDK. But the tests are not needed for the OpenWrt packages
anyway, so this commit disables them again.

No rev bump is done because this has no effect on the packages.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>