remove code duplication between telnet-client / telnet-client-ipa

We now simply use the original telnet-client.c with one small callback
into the ipaccess authentication layer
diff --git a/util/Makefile.am b/util/Makefile.am
index 7134d68..5cee32b 100644
--- a/util/Makefile.am
+++ b/util/Makefile.am
@@ -1,8 +1,9 @@
 AM_CFLAGS = -I..
 AM_LDFLAGS = -L..
 
-ipaccess_telnet_SOURCES = telnet-client-ipa.c ../libtelnet.h
+ipaccess_telnet_SOURCES = telnet-client.c ../libtelnet.h ipaccess-auth.c
 ipaccess_telnet_LDADD = ../libtelnet.la -lssl
+ipaccess_telnet_CFLAGS = -DNANO_BTS_CLI_CLIENT
 
 telnet_client_SOURCES = telnet-client.c ../libtelnet.h
 telnet_client_LDADD = ../libtelnet.la