tests: log_tests_skipped() already appends ", skipping tests"

We would say:
test-bpf-lsm: Can't use mlock(), skipping., skipping tests.

src/libsystemd/sd-device/test-sd-device-monitor.c

@@ -302,7 +302,7 @@ int main(int argc, char *argv[]) {
         r = test_receive_device_fail();
         if (r < 0) {
                 assert_se(r == -EPERM && detect_container() > 0);
-                return log_tests_skipped("Running in container? Skipping remaining tests");
+                return log_tests_skipped("Running in container");
         }
 
         assert_se(sd_device_new_from_syspath(&loopback, "/sys/class/net/lo") >= 0);

src/test/test-bpf-foreign-programs.c

@@ -289,11 +289,11 @@ int main(int argc, char *argv[]) {
         (void) setrlimit_closest(RLIMIT_MEMLOCK, &rl);
 
         if (!can_memlock())
-                return log_tests_skipped("Can't use mlock(), skipping.");
+                return log_tests_skipped("Can't use mlock()");
 
         r = cg_all_unified();
         if (r <= 0)
-                return log_tests_skipped("Unified hierarchy is required, skipping.");
+                return log_tests_skipped("Unified hierarchy is required");
 
         r = enter_cgroup_subroot(NULL);
         if (r == -ENOMEDIUM)

src/test/test-bpf-lsm.c

@@ -77,7 +77,7 @@ int main(int argc, char *argv[]) {
         (void) setrlimit_closest(RLIMIT_MEMLOCK, &rl);
 
         if (!can_memlock())
-                return log_tests_skipped("Can't use mlock(), skipping.");
+                return log_tests_skipped("Can't use mlock()");
 
         r = lsm_bpf_supported();
         if (r <= 0)

src/test/test-socket-bind.c

@@ -120,14 +120,14 @@ int main(int argc, char *argv[]) {
         (void) setrlimit_closest(RLIMIT_MEMLOCK, &rl);
 
         if (!can_memlock())
-                return log_tests_skipped("Can't use mlock(), skipping.");
+                return log_tests_skipped("Can't use mlock()");
 
         r = bpf_socket_bind_supported();
         if (r <= 0)
-                return log_tests_skipped("socket-bind is not supported, skipping.");
+                return log_tests_skipped("socket-bind is not supported");
 
         if (find_netcat_executable(&netcat_path) != 0)
-                return log_tests_skipped("Can not find netcat executable, skipping.");
+                return log_tests_skipped("Can not find netcat executable");
 
         r = enter_cgroup_subroot(NULL);
         if (r == -ENOMEDIUM)