Remove 2024 inotify instance exhaustion fix section from README

Author: shaypal5

README.rst

@@ -54,15 +54,6 @@ Features
 * Thread-safety.
 * **Per-call max age:** Specify a maximum age for cached values per call.
 
-Bug Fixes
-=========
-
-**2024: Fix for inotify instance exhaustion in pickle backend**
-
-- The pickle backend previously created a new inotify instance (via watchdog) for each cache wait, which could exhaust the system's inotify instance limit under heavy concurrency (see [Issue #24](https://github.com/python-cachier/cachier/issues/24)).
-- This is now fixed: observers are reused and properly cleaned up, and the backend falls back to polling if the inotify limit is reached.
-- A regression test is included: it will fail if the bug is present, and pass when the fix is in place.
-
 Cachier is **NOT**:
 
 * Meant as a transient cache. Python's @lru_cache is better.