RSA and ECDSA cryptography is now mandatory; remove the checks for those

bin/tests/system/qmin/prereq.sh

@@ -12,8 +12,6 @@
 SYSTEMTESTTOP=..
 . $SYSTEMTESTTOP/conf.sh
 
-$SHELL ../testcrypto.sh || exit 255
-
 if test -n "$PYTHON"
 then
     if $PYTHON -c "import dns" 2> /dev/null
@@ -27,3 +25,5 @@ else
     echo_i "This test requires Python and the dnspython module." >&2
     exit 1
 fi
+
+exit 0