Update SECURITY.md

Author: osmontero

SECURITY.md

@@ -4,14 +4,6 @@
 
 | Version   | Status             | EoS/EoL      |
 | --------- | ------------------ | ------------ |
-|  1.x      | :x:                | Jan 15, 2016 |
-|  2.x      | :x:                | Jan 15, 2017 |
-|  3.x      | :x:                | Jan 15, 2018 |
-|  4.x      | :x:                | Jan 15, 2029 |
-|  5.x      | :x:                | Jan 15, 2020 |
-|  6.x      | :x:                | Jan 15, 2021 |
-|  7.x      | :x:                | Jan 15, 2022 |
-|  8.x      | :x:                | Jan 15, 2023 |
 |  9.x      | :x:                | Jan 15, 2024 |
 |  10.x     | :clock1:           | Jul 15, 2026 |
 |  11.x LTS | :white_check_mark: | Nov 15, 2030 |