gitignore: drop retired artifact paths

.gitignore

@@ -13,24 +13,11 @@
 .claude/
 .ai/
 
-# Stray executables produced by ad-hoc `ww build` runs in the project
-# root. Real source for these lives under selfhost/test/ as .ww files.
-/loop
-/sym_link
-/memiotest
-/trypromote
-/tagged_ptr_ret
-/smoke
-
 # Per-module build artifacts. The .combined.ww files under selfhost/
 # are intentionally tracked — they're frozen bootstrap inputs.
 selfhost/**/*.o
 selfhost/**/*.s
 
-# Test-probe leftovers. `ww build` drops .combined.ww next to the
-# source; the selfhost/test/ probes don't need them tracked.
-selfhost/test/*.combined.ww
-
 # `ww build` on a lib/ module leaves a .combined.ww next to the
 # source. None of these are bootstrap inputs (those are under
 # selfhost/cmd/*/main.combined.ww) — they're just transient.
@@ -54,9 +41,6 @@ test/wcc/data/*.combined.ww
 test/wcc/data/**/*.o
 test/wcc/data/**/*.s
 test/wcc/data/**/*.combined.ww
-test/wcc/data/modcollision/pos
-test/wcc/data/modcollision/neg
-test/wcc/data/samemodprefer/pos
 examples/mandelbrot/mandelbrot
 examples/cmatrix/cmatrix
 examples/lisp/lisp