ci: fix virtual env workflow

Signed-off-by: CrazyMax <[email protected]>

Author: crazy-max

.github/workflows/virtual-env.yml

@@ -23,7 +23,6 @@ jobs:
           - ubuntu-latest
           - ubuntu-22.04
           - ubuntu-20.04
-          - ubuntu-18.04
     steps:
       -
         name: File system