[3732] Remove Doxygen references to deleted documentation sections

doc/devel/mainpage.dox

@@ -49,7 +49,6 @@
  *
  * @section dhcpMaintenanceGuide DHCP Maintenance Guide
  * - @subpage dhcp4
- *   - @subpage dhcpv4Session
  *   - @subpage dhcpv4ConfigParser
  *   - @subpage dhcpv4ConfigInherit
  *   - @subpage dhcpv4OptionsParse
@@ -59,7 +58,6 @@
  *   - @subpage dhcpv4SignalBasedReconfiguration
  *   - @subpage dhcpv4Other
  * - @subpage dhcp6
- *   - @subpage dhcpv6Session
  *   - @subpage dhcpv6ConfigParser
  *   - @subpage dhcpv6ConfigInherit
  *   - @subpage dhcpv6DDNSIntegration

src/bin/dhcp4/ctrl_dhcp4_srv.h

@@ -28,9 +28,6 @@ namespace dhcp {
 ///
 /// This is a class that is responsible for DHCPv4 server being controllable,
 /// by reading configuration file from disk.
-///
-/// For detailed explanation or relations between main(), ControlledDhcpv4Srv,
-/// Dhcpv4Srv and other classes, see \ref dhcpv4Session.
 class ControlledDhcpv4Srv : public isc::dhcp::Dhcpv4Srv {
 public:
 

src/bin/dhcp6/ctrl_dhcp6_srv.h

@@ -28,9 +28,6 @@ namespace dhcp {
 ///
 /// This is a class that is responsible for DHCPv6 server being controllable,
 /// by reading configuration file from disk.
-///
-/// For detailed explanation or relations between main(), ControlledDhcpv6Srv,
-/// Dhcpv6Srv and other classes, see \ref dhcpv6Session.
 class ControlledDhcpv6Srv : public isc::dhcp::Dhcpv6Srv {
 public: