Remove changes file for 24762

(Bugfixes for bugs not in any released Tor don't get listed in the
changelog, and therefore don't need changes files.)

changes/bug24762

@@ -1,3 +0,0 @@
-  o Minor bugfixes (shutdown, file handling):
-    - Stop trying to remove NULL filenames on shutdown.
-      Fixes bug 24762; bugfix on master.