Remove obsolete ./configure option

The '--enable-vty-tests' is just alias to '--enable-external-tests'
anyway.

Change-Id: I9492d8e988b464aa41f572611cbf2461bb8be3eb

README.vty-tests

@@ -4,7 +4,7 @@ To run the configuration parsing and output (VTY) test suite, first install
 
 and pass the following configure options here:
 
-  ./configure --enable-vty-tests --enable-external-tests
+  ./configure --enable-external-tests
 
 The VTY tests are then included in the standard check target:
 

configure.ac

@@ -122,11 +122,6 @@ then
 	CPPFLAGS="$CPPFLAGS -pg"
 fi
 
-AC_ARG_ENABLE([vty_tests],
-		AC_HELP_STRING([--enable-vty-tests],
-				[Include the VTY/CTRL tests in make check (deprecated)
-				[default=no]]),
-		[enable_ext_tests="$enableval"],[enable_ext_tests="no"])
 AC_ARG_ENABLE([external_tests],
 		AC_HELP_STRING([--enable-external-tests],
 				[Include the VTY/CTRL tests in make check [default=no]]),

contrib/jenkins.sh

@@ -40,7 +40,7 @@ set -x
 
 cd "$base"
 autoreconf --install --force
-./configure --enable-sanitize --enable-vty-tests --enable-external-tests
+./configure --enable-sanitize --enable-external-tests
 $MAKE $PARALLEL_MAKE
 LD_LIBRARY_PATH="$inst/lib" $MAKE check \
   || cat-testlogs.sh