Fix README (old data is now being removed automatically)

grafolean · grafolean · commit 808d7252e325 · 2020-04-18T17:32:50.000+02:00
diff --git a/README.md b/README.md
@@ -13,7 +13,6 @@ Requirements:
 - Grafolean must be accessible via HTTP(S)
 
 Current limitations:
-- removing old data is not implemented yet
 - only NetFlow v9 and v5 are supported
 
 # License
