remove arch from CI (#82)

Author: mateuszbaran

.github/workflows/ci.yml

@@ -18,7 +18,6 @@ jobs:
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.julia-version }}
-          arch: x64
       - uses: julia-actions/julia-buildpkg@latest
       - uses: julia-actions/julia-runtest@latest
       - uses: julia-actions/julia-processcoverage@v1

.github/workflows/nightly.yml

@@ -15,7 +15,6 @@ jobs:
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.julia-version }}
-          arch: x64
       - uses: julia-actions/julia-buildpkg@latest
       - uses: julia-actions/julia-runtest@latest
         env: