analyze,timedatectl: drop explicit field name

The .abstract field is always set, so it is fairly unambiguous to
recognize, and the value is usually long, so it's better to be brief.
It was only explicitly labelled in those two places.

src/analyze/analyze.c

@@ -198,7 +198,7 @@ static int verb_transient_settings(int argc, char *argv[], uintptr_t _data, void
 
 COMMAND(
         "systemd-analyze\0",
-        .abstract = "Profile systemd, show unit dependencies, check unit files.",
+        "Profile systemd, show unit dependencies, check unit files.",
         .man_pages = "systemd-analyze.1\0",
         .pager_flags = &arg_pager_flags,
 );

src/timedate/timedatectl.c

@@ -181,7 +181,7 @@ static int print_status_info(const StatusInfo *i) {
 
 COMMAND(
         "timedatectl\0",
-        .abstract = "Query or change system time and date settings.",
+        "Query or change system time and date settings.",
         .man_pages = "timedatectl.1\0",
         .pager_flags = &arg_pager_flags,
 );