Remove ACEregistry from CI workflows

ACEpotentials and ACEfit are now registered in the General registry,
so the ACEregistry is no longer needed.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: jameskermode

.github/workflows/CI.yml

@@ -42,12 +42,8 @@ jobs:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
       - uses: actions/setup-python@v2
-        with: 
+        with:
           python-version: ${{ matrix.python-version }}
-      - run: |
-          using Pkg
-          Pkg.pkg"registry add https://github.com/ACEsuit/ACEregistry"
-        shell: bash -c "julia --color=yes {0}"
       - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
@@ -140,10 +136,6 @@ jobs:
       - uses: julia-actions/setup-julia@v2
         with:
           version: '1'
-      - run: |
-          using Pkg
-          Pkg.pkg"registry add https://github.com/ACEsuit/ACEregistry"
-        shell: bash -c "julia --color=yes {0}"
       - uses: actions/setup-python@v2
         with:
           python-version: '3.11'

.github/workflows/export-ci.yml

@@ -97,10 +97,6 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-julia-export-
 
-      - name: Add ACE registry
-        run: |
-          julia -e 'using Pkg; Pkg.Registry.add(RegistrySpec(url="https://github.com/ACEsuit/ACEregistry"))'
-
       - name: Install Julia dependencies
         run: |
           julia --project=export -e '
@@ -149,10 +145,6 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-julia-export-
 
-      - name: Add ACE registry
-        run: |
-          julia -e 'using Pkg; Pkg.Registry.add(RegistrySpec(url="https://github.com/ACEsuit/ACEregistry"))'
-
       - name: Install Julia dependencies
         run: |
           julia --project=export -e '
@@ -200,10 +192,6 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-julia-export-
 
-      - name: Add ACE registry
-        run: |
-          julia -e 'using Pkg; Pkg.Registry.add(RegistrySpec(url="https://github.com/ACEsuit/ACEregistry"))'
-
       - name: Install Julia dependencies
         run: |
           julia --project=export -e '
@@ -247,10 +235,6 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-julia-export-
 
-      - name: Add ACE registry
-        run: |
-          julia -e 'using Pkg; Pkg.Registry.add(RegistrySpec(url="https://github.com/ACEsuit/ACEregistry"))'
-
       - name: Install Julia dependencies
         run: |
           julia --project=export -e '
@@ -304,10 +288,6 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-julia-export-
 
-      - name: Add ACE registry
-        run: |
-          julia -e 'using Pkg; Pkg.Registry.add(RegistrySpec(url="https://github.com/ACEsuit/ACEregistry"))'
-
       - name: Install Julia dependencies
         run: |
           julia --project=export -e '