bundles/sshmon: get rid of sysstat

bundles/sshmon/metadata.py

@@ -8,7 +8,10 @@ defaults = {
             'monitoring-plugins': {},
             'python3-requests': {},
             'python3-setuptools': {},  # needed by check_github_for_new_release
-            'sysstat': {},  # needed by check_cpu_stats
+            'sysstat': {
+                # legacy
+                'installed': False,
+            },
         },
     },
     'icinga2_api': {
@@ -37,7 +40,6 @@ defaults = {
             'perl-libwww': {},
             'monitoring-plugins': {},
             'python-requests': {},
-            'sysstat': {},
         },
     },
 }