Merge pull request #616 from JuliaDiff/mcabbott-patch-2

Stop testing on 1.5

Author: oxinabox

.github/workflows/CI.yml

@@ -33,11 +33,6 @@ jobs:
             arch: x86
           - os: windows-latest
             arch: x86
-        include:
-          # Add a 1.5 job because that's what Invenia actually uses
-          - os: ubuntu-latest
-            version: "1.5"
-            arch: x64
     steps:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@v1