Remove ImageMagick installation via Chocolatey from GitHub Workflows

ImageMagick is pre-installed on Windows runners.

.github/workflows/cd.yml

@@ -25,7 +25,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip wheel
         poetry install
-        choco install imagemagick
     - name: Cache external Homebrew Tools
       id: cache-hb-tools
       uses: actions/cache@v3

.github/workflows/ci.yml

@@ -37,8 +37,6 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Build project
       run: poetry build
-    - name: Install ImageMagick
-      run: choco install imagemagick
     - name: Cache external Homebrew Tools
       id: cache-hb-tools
       uses: actions/cache@v3