REGTESTS: vars: Remove useless ssl tunes from conditional set-var test

The global section of the cond_set_var.vtc test used some useless SSL
tunes which made the test fail on builds without SSL.
diff --git a/reg-tests/sample_fetches/cond_set_var.vtc b/reg-tests/sample_fetches/cond_set_var.vtc
index eefee9a..67786ae 100644
--- a/reg-tests/sample_fetches/cond_set_var.vtc
+++ b/reg-tests/sample_fetches/cond_set_var.vtc
@@ -29,8 +29,6 @@
 
 haproxy h1 -conf {
     global
-        tune.ssl.default-dh-param 2048
-        tune.ssl.capture-buffer-size 1
         set-var proc.int12 int(12)
         set-var proc.int5  var(proc.str60,60),div(proc.int12)