Revert "autotools: don't link with -lcrypto twice."

This reverts commit 036fa9c.

That doesn't work.  We'd have to figure out what -I flag to use with
that version of libcrypto and set the CFLAGS appropriately, and set
HAVE_LIBCRYPTO to yes.

If you have more than one non-system version of a library, hilarity is
likely to ensure.  Don't do that.

Author: guyharris

configure.ac

@@ -857,26 +857,6 @@ AC_ARG_WITH(crypto,
 	want_libcrypto=ifavailable
 	AC_MSG_RESULT([yes, if available])
 ])
-if test "$want_libcrypto" != "no"; then
-	#
-	# Do we already *have* libcrypto, e.g. if we're using a
-	# version of libpcap that has rpcap-over-TLS support?
-	#
-	AC_MSG_CHECKING([whether we're already linking with libcrypto])
-	if $EGREP -s -q -e '-lcrypto|libcrypto' <<EOF
-$LIBS
-EOF
-	then
-		#
-		# Yes; we already *have* libcrypto, don't
-		# look for another one.
-		#
-		AC_MSG_RESULT([yes])
-		want_libcrypto=no
-	else
-		AC_MSG_RESULT([no])
-	fi
-fi
 if test "$want_libcrypto" != "no"; then
 	#
 	# Were we told where to look for libcrypto?