Update ci.yml

Author: joaquimg

.github/workflows/ci.yml

@@ -32,9 +32,6 @@ jobs:
           - version: '1'
             os: windows-latest
             arch: x64
-          - version: '1.6'
-            os: ubuntu-latest
-            arch: x64
           - version: '1'
             os: ubuntu-latest
             arch: x86