Remove redundant debug message.

Two consecutive messages (ie no branch between them) at the same level are not
needed, so only keep the one that has the most information.
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 4329c08..cb47059 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1141,8 +1141,6 @@
         unsigned char session_hash[48];
         size_t hash_len;
 
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "using extended master secret" ) );
-
         handshake->calc_verify( ssl, session_hash, &hash_len );
 
         MBEDTLS_SSL_DEBUG_BUF( 3, "session hash", session_hash, hash_len );
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 9a96294..92eb62c 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -1210,8 +1210,8 @@
             -s "found extended master secret extension" \
             -s "server hello, adding extended master secret extension" \
             -c "found extended_master_secret extension" \
-            -c "using extended master secret" \
-            -s "using extended master secret"
+            -c "session hash" \
+            -s "session hash"
 
 run_test    "Extended Master Secret: client enabled, server disabled" \
             "$P_SRV debug_level=3 extended_ms=0" \
@@ -1221,8 +1221,8 @@
             -s "found extended master secret extension" \
             -S "server hello, adding extended master secret extension" \
             -C "found extended_master_secret extension" \
-            -C "using extended master secret" \
-            -S "using extended master secret"
+            -C "session hash" \
+            -S "session hash"
 
 run_test    "Extended Master Secret: client disabled, server enabled" \
             "$P_SRV debug_level=3 extended_ms=1" \
@@ -1232,8 +1232,8 @@
             -S "found extended master secret extension" \
             -S "server hello, adding extended master secret extension" \
             -C "found extended_master_secret extension" \
-            -C "using extended master secret" \
-            -S "using extended master secret"
+            -C "session hash" \
+            -S "session hash"
 
 requires_config_enabled MBEDTLS_SSL_PROTO_SSL3
 run_test    "Extended Master Secret: client SSLv3, server enabled" \
@@ -1244,8 +1244,8 @@
             -S "found extended master secret extension" \
             -S "server hello, adding extended master secret extension" \
             -C "found extended_master_secret extension" \
-            -C "using extended master secret" \
-            -S "using extended master secret"
+            -C "session hash" \
+            -S "session hash"
 
 requires_config_enabled MBEDTLS_SSL_PROTO_SSL3
 run_test    "Extended Master Secret: client enabled, server SSLv3" \
@@ -1256,8 +1256,8 @@
             -S "found extended master secret extension" \
             -S "server hello, adding extended master secret extension" \
             -C "found extended_master_secret extension" \
-            -C "using extended master secret" \
-            -S "using extended master secret"
+            -C "session hash" \
+            -S "session hash"
 
 # Tests for FALLBACK_SCSV