[newlib-cygwin/main] Cygwin: CI: cygstress: remove 'filerace', 'flock' and 'fork' from CI

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=ace88c7ba17a83733ba586e00fbcf523223ba105

commit ace88c7ba17a83733ba586e00fbcf523223ba105
Author: Christian Franke <[email protected]>
Date:   Wed Jul 9 15:04:50 2025 +0200

    Cygwin: CI: cygstress: remove 'filerace', 'flock' and 'fork' from CI
    
    The 'filerace' test may run longer than the watchdog timeout.
    'flock' and 'fork' may leave processes behind for some unknown reason.
    
    Signed-off-by: Christian Franke <[email protected]>

Diff:
---
 winsup/testsuite/stress/cygstress | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/winsup/testsuite/stress/cygstress b/winsup/testsuite/stress/cygstress
index f1c1a8d11..9b3fa2c07 100755
--- a/winsup/testsuite/stress/cygstress
+++ b/winsup/testsuite/stress/cygstress
@@ -138,12 +138,13 @@ stress_tests='
                             #   https://sourceware.org/pipermail/cygwin/2025-June/258386.html
                             # (fixed in Cygwin 3.7.0: lone high surrogate not encoded correctly)
   filename --filename-opts posix # WORKS,CI # restricts filenames to POSIX charset
-  filerace      # WORKS,CI
+  filerace      # heavy     # uses many [p]write() commands
+                            # TODO undecided: watchdog timeout may be too short
   flipflop      # WORKS
-  flock         # WORKS,CI
+  flock         # WORKS     # TODO undecided: "processes left" in some cases
   flushcache    # WORKS
   fma           # WORKS
-  fork          # WORKS,CI
+  fork          # WORKS     # TODO undecided: "processes left" in some cases
   forkheavy     # heavy     # forks until process table is full
   fp            # WORKS,CI
   fp-error      # WORKS,CI