Revert temporary debugging in u0.vtc

Reverts:
	8eb42d2c
	f43679b6
	6f1563cf

bin/varnishtest/tests/u00000.vtc

@@ -4,16 +4,11 @@ shell "varnishd -b 127.0.0.1:80 -C 2> ${tmpdir}/_.c"
 
 shell {
 	varnishd -n ${tmpdir}/no_keep -C -b 127.0.0.1:80 2> no_keep.c
-	ls -laR
-	set -x
-	tail no_keep.c || true
 	test -s no_keep.c && ! test -d no_keep
 }
 
 shell {
 	varnishd -n ${tmpdir}/keep -p debug=+vcl_keep -C -b 127.0.0.1:80 2> keep.c
-	ls -l
-	set -x
 	test -s keep.c && test -d keep
 }