timeline: don't bother w/ time tracking

doc/timeline/week24.txt

@@ -6,7 +6,12 @@ Week 24 (08.06. - 14.06.)
 
 [ ] supervision directory: clean up, find reasonable nomenclature
 
-[ ] meta: set up time tracking?
+[x] meta: set up time tracking?
+
+    - I decided against it
+
+    - Rather than keeping fine-grained time tracking, I'll try to
+      finish what's written in the monthly /doc/timeline files
 
 [ ] meta: set up work items, probabl use Gitlab issues for that