Prune test combinations

Author: penelopeysm

.github/workflows/Tests.yml

@@ -48,12 +48,8 @@ jobs:
           - 1
           - 2
         exclude:
-          # With Windows and macOS, only run Julia 1.7, x64, 2 threads. We just want to see
+          # With Windows and macOS, only run x64, 2 threads. We just want to see
           # some combination work on OSes other than Ubuntu.
-          - os: windows-latest
-            version: '1'
-          - os: macOS-latest
-            version: '1'
           - os: windows-latest
             arch: x86
           - os: macOS-latest
@@ -62,9 +58,7 @@ jobs:
             num_threads: 1
           - os: macOS-latest
             num_threads: 1
-          # It's sufficient to test x86 with one version of Julia and one thread.
-          - version: '1'
-            arch: x86
+          # It's sufficient to test x86 with one thread.
           - num_threads: 2
             arch: x86