diff --git a/ipapython/certdb.py b/ipapython/certdb.py
index b744ddff9..ffd4a6616 100644
--- a/ipapython/certdb.py
+++ b/ipapython/certdb.py
@@ -308,15 +308,6 @@ class NSSDatabase(object):
         new_args.extend(args)
         return ipautil.run(new_args, stdin, **kwargs)
 
-    def run_modutil(self, args, stdin=None, **kwargs):
-        self._check_db()
-        new_args = [
-            paths.MODUTIL,
-            '-dbdir', '{}:{}'.format(self.dbtype, self.secdir)
-        ]
-        new_args.extend(args)
-        return ipautil.run(new_args, stdin, **kwargs)
-
     def exists(self):
         """Check DB exists (all files are present)
         """
diff --git a/ipaserver/install/certs.py b/ipaserver/install/certs.py
index a9c6666c6..50b971645 100644
--- a/ipaserver/install/certs.py
+++ b/ipaserver/install/certs.py
@@ -276,9 +276,6 @@ class CertDB(object):
     def run_certutil(self, args, stdin=None, **kwargs):
         return self.nssdb.run_certutil(args, stdin, **kwargs)
 
-    def run_modutil(self, args, stdin=None, **kwargs):
-        return self.nssdb.run_modutil(args, stdin, **kwargs)
-
     def create_noise_file(self):
         if os.path.isfile(self.noise_fname):
             os.remove(self.noise_fname)
@@ -690,32 +687,6 @@ class CertDB(object):
 
         return is_ipa_issued_cert(api, cert)
 
-    def disable_system_trust(self):
-        """Disable system trust module of NSSDB
-        """
-        name = 'Root Certs'
-        try:
-            result = self.run_modutil(
-                ['-force', '-list', name],
-                env={},
-                capture_output=True
-            )
-        except ipautil.CalledProcessError as e:
-            if e.returncode == 29:  # ERROR: Module not found in database.
-                logger.debug(
-                    'Module %s not available, treating as disabled', name)
-                return False
-            raise
-
-        if 'Status: Enabled' in result.output:
-            self.run_modutil(
-                ['-force', '-disable', name],
-                env={}
-            )
-            return True
-
-        return False
-
     def needs_upgrade_format(self):
         """Check if NSSDB file format needs upgrade