Delete merge-check.sh and merge-check-typescript.sh: every step they ran is a Go test or the build module's; a test refuses their return (issues 1295 and 1293, E5c)

checks/noscripts/go.mod

@@ -0,0 +1,3 @@
+module checks/noscripts
+
+go 1.22

checks/noscripts/noscripts_test.go

@@ -0,0 +1,19 @@
+package noscripts
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// The catalogue's checks are Go tests (novox/hq ADR 0529 clause 5, ADR 0445): the checker runs every nested Go module's tests by
+// the language's convention and no script at the root says what else to run. A script back at the root would be a check nobody
+// runs (ADR 0503 §3: since R4e the checker has not run them), so it is refused.
+func TestNoScriptOfTheOldCheckStandsAtTheRoot(t *testing.T) {
+	for _, name := range []string{"merge-check.sh", "merge-check-typescript.sh", "check-nested-modules.sh"} {
+		if _, err := os.Stat(filepath.Join("..", "..", name)); !errors.Is(err, os.ErrNotExist) {
+			t.Errorf("%s stands at the catalogue's root (%v): what it ran is a Go test in checks/ or a step of the build module", name, err)
+		}
+	}
+}