commitctx: consider removed as touched

This achieve the same result with clearer code.

This is part of a larger refactoring/cleanup of the commitctx code to clarify
and augment the logic gathering metadata useful for copy tracing. The current
code is a tad too long and entangled to make such update easy. We start with
easy and small cleanup.

Differential Revision: https://phab.mercurial-scm.org/D8707

mercurial/localrepo.py

@@ -3164,10 +3164,12 b' class localrepository(object):'
                     rf = metadata.get_removal_filter(ctx, (p1, p2, m1, m2))
                     removed = [f for f in removed if not rf(f)]
 
+                touched.extend(removed)
+
                 if writechangesetcopy:
                     filesremoved = removed
 
-                files = touched + removed
+                files = touched
                 md = None
                 if not files:
                     # if no "files" actually changed in terms of the changelog,