Replace (skip-unless nil) by tag :unstable in test packages

* test/lisp/filenotify-tests.el (file-notify--deftest-remote):
Use tag :unstable if SKIP is non-nil.

* test/lisp/net/tramp-tests.el (tramp-test36-vc-registered):
Use ert-skip instead of (skip-unless nil).

* test/lisp/progmodes/python-tests.el
(python-tests--python-nav-end-of-statement--infloop): Use tag
:unstable instead of (skip-unless nil).

1 files changed, 1 insertions, 1 deletions

diff --git a/test/lisp/progmodes/python-tests.el b/test/lisp/progmodes/python-tests.el
index 999cf8dc7a3..b940f45bb90 100644
--- a/test/lisp/progmodes/python-tests.el
+++ b/test/lisp/progmodes/python-tests.el
@@ -5350,7 +5350,7 @@ buffer with overlapping strings."
   ;; The description of the problem it's trying to catch is not clear enough
   ;; to be able to see if the underlying problem is really fixed, sadly.
   ;; E.g. I don't know what is meant by "overlap", really.
-  (skip-unless nil)
+  :tags '(:unstable)
   (python-tests-with-temp-buffer "''' '\n''' ' '\n"
     (syntax-propertize (point-max))
     ;; Create a situation where strings nominally overlap.  This