Merge pull request #5705 from AndrzejKurek/off-by-one-ssl-opt-2-28

Backport 2.28 - Fix an off-by-one error in ssl-opt.sh
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index bec84a1..cea12f1 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -52,11 +52,6 @@
 The list of maintained branches can be found in the [Current Branches section
 of BRANCHES.md](BRANCHES.md#current-branches).
 
-Currently maintained LTS branches are:
-1. [mbedtls-2.7](https://github.com/Mbed-TLS/mbedtls/tree/mbedtls-2.7)
-1. [mbedtls-2.16](https://github.com/Mbed-TLS/mbedtls/tree/mbedtls-2.16)
-
-
 Tests
 -----
 As mentioned, tests that show the correctness of the feature or bug fix should be added to the pull request, if no such tests exist.