dev(hansbug): do not install graphviz

pyproject.toml

@@ -12,7 +12,6 @@ skip = ["pp*"] # Do not build for PyPy
 [tool.cibuildwheel.windows]
 archs = ["x86", 'AMD64']
 before-test = [# Unittest for windows
-    "choco install graphviz",
     "pip install -r \"{project}\\requirements-test.txt\"",
 ]
 test-command = [
@@ -26,7 +25,6 @@ test-command = [
 [tool.cibuildwheel.macos]
 archs = ["x86_64", "arm64"] # Build for x86_64 and arm64
 before-test = [# Unittest for macos
-    "brew install graphviz",
     "pip install -r {project}/requirements-test.txt",
 ]
 test-command = [
@@ -42,7 +40,6 @@ test-command = [
 archs = ["x86_64", "aarch64"] # Build for x86_64 and arm64
 skip = ["pp* *musllinux*"] # dependencies do not build for musl
 before-test = [# Unittest for linux
-    "yum install -y graphviz",
     "pip install -r {project}/requirements-test.txt",
 ]
 test-command = [