ci: remove duplicate workflows

Author: avik-pal

.github/workflows/CI_NonlinearSolveBase.yml

@@ -65,41 +65,3 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
-
-  downgrade:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-    steps:
-      - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v2
-        with:
-          version: ${{ matrix.version }}
-      - uses: julia-actions/julia-downgrade-compat@v2
-        with:
-          skip: SciMLJacobianOperators
-      - name: "Install Dependencies and Run Tests"
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          # Install packages present in subdirectories
-          dev_pks = Pkg.PackageSpec[]
-          for path in ("lib/SciMLJacobianOperators",)
-              push!(dev_pks, Pkg.PackageSpec(; path))
-          end
-          Pkg.develop(dev_pks)
-          Pkg.instantiate()
-          Pkg.test(; coverage="user")
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=lib/NonlinearSolveBase {0}
-      - uses: julia-actions/julia-processcoverage@v1
-        with:
-          directories: lib/NonlinearSolveBase/src,lib/NonlinearSolveBase/ext,lib/SciMLJacobianOperators/src
-      - uses: codecov/codecov-action@v5
-        with:
-          files: lcov.info
-          token: ${{ secrets.CODECOV_TOKEN }}
-          verbose: true
-          fail_ci_if_error: false