docs: Removing references to non-existing manpages in sphinx config

Change-Id: I85984febb392dc75f46c0e777f295ccfc429f1d3
Fixes: #1565
diff --git a/docs/conf.py b/docs/conf.py
index 4d2b58c..132c961 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -231,10 +231,8 @@
     ('manpages/ndnsec-import',       'ndnsec-import',      'part of NDN security tools', None, 1),
     ('manpages/ndnsec-key-gen',      'ndnsec-key-gen',     'part of NDN security tools', None, 1),
     ('manpages/ndnsec-list',         'ndnsec-list',        'part of NDN security tools', None, 1),
-    ('manpages/ndnsec-op-tool',      'ndnsec-op-tool',     'part of NDN security tools', None, 1),
     ('manpages/ndnsec-set-acl',      'ndnsec-set-acl',     'part of NDN security tools', None, 1),
     ('manpages/ndnsec-set-default',  'ndnsec-set-default', 'part of NDN security tools', None, 1),
-    ('manpages/ndnsec-sig-verify',   'ndnsec-sig-verify',  'part of NDN security tools', None, 1),
     ('manpages/ndnsec-sign-req',     'ndnsec-sign-req',    'part of NDN security tools', None, 1),
     ('manpages/ndnsec-unlock-tpm',   'ndnsec-unlock-tpm',  'part of NDN security tools', None, 1),
     ('tutorials/security-validator-config', 'ndnsec-validator.conf',