Remove big template comment from SECURITY.md

Author: mkaput

SECURITY.md

@@ -2,17 +2,6 @@
 
 ## Supported Versions
 
-<!-- Use this section to tell people about which versions of your project are
-currently being supported with security updates.
-
-| Version | Supported          |
-| ------- | ------------------ |
-| 5.1.x   | :white_check_mark: |
-| 5.0.x   | :x:                |
-| 4.0.x   | :white_check_mark: |
-| < 4.0   | :x:                |
--->
-
 Only the latest release is supported with security updates.
 
 ## Reporting a Vulnerability