test: remove package-wide import assumptions

test/wcc/data/modfn_coexist_vbu/aa/aa.ww

@@ -1,6 +1,5 @@
-// #30 dir-package — the imported module `aa` for the VALUE-BEFORE-USE
-// twin. Identical to ../../modfn_coexist/aa/aa.ww; kept as its own dir so
-// the two layouts are independently buildable. Driver: the
-// modfn_coexist_vbu leg of the decl-namespace gate (NNN_declns_sep.c).
+// #30 dir-package — the imported package for the declaration-before-import
+// twin. It stays in its own directory so the two layouts are independently
+// buildable.
 package aa;
 export fn helper() i32 = { return 5; };