[4106] Minor updates as a result of the review.

Removed debug leftover and changed 'responds' to 'answers'.

src/bin/dhcp6/dhcp6_dhcp4o6_ipc.cc

@@ -46,7 +46,6 @@ void Dhcp4o6Ipc::open() {
 }
 
 void Dhcp4o6Ipc::handler() {
-    std::cout << "handler" << std::endl;
     Dhcp4o6Ipc& ipc = Dhcp4o6Ipc::instance();
 
     // Receive message from IPC.

src/lib/dhcpsrv/dhcp4o6_ipc.h

@@ -40,7 +40,7 @@ public:
 ///
 /// When the DHCPv6 server receives the DHCPv4 query message it needs
 /// to forward it to the DHCPv4 server for processing. The DHCPv4
-/// server processes the message and responds with the DHCPv4 response
+/// server processes the message and answers with the DHCPv4 response
 /// message to the DHCPv6 server. The server forwards it back to the
 /// client. This class implements the communication between the DHCPv4
 /// and DHCPv6 servers to allow for transmission of the DHCPv4 query