remove a noisy parameter in match.vtc

src/tests/match.vtc

@@ -2,7 +2,7 @@
 
 varnishtest "regex constructor"
 
-varnish v1 -arg "-p debug=+workspace" -vcl {
+varnish v1 -vcl {
 	import pcre2 from "${vmod_topbuild}/src/.libs/libvmod_pcre2.so";
 	backend b { .host = "${bad_ip}"; }