Remove x86 from CI pipeline

Author: cynddl

.github/workflows/CI.yml

@@ -8,11 +8,8 @@ jobs:
     strategy:
       matrix:
         julia-version: ['1.6', '1.7']
-        julia-arch: [x64, x86]
+        julia-arch: [x64]
         os: [ubuntu-latest, windows-latest, macos-latest]
-        exclude:
-          - os: macOS-latest
-            julia-arch: x86
 
     steps:
       - uses: actions/checkout@v2