Removed unused admin API: clear access token cache.

Change-Id: Iab9628c94711d6a11a465f224ca43983483f6c8c
diff --git a/full/Changes b/full/Changes
index c367b10..8b2f84e 100644
--- a/full/Changes
+++ b/full/Changes
@@ -12,6 +12,7 @@
 2022-03-28
  - Updated admin filter (admintoken as a form param) and uses 
    it for the closing index reader API. 
+ - Removed unused admin API: clear access token cache.
 
 # version 0.65.1