chore: remove pygraphviz

docs/tutorial/formatting.md

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+# Format
+
+Sometimes, it can be useful to print circuits. We provide methods to just do that.
+
+## Formatting
+
+You can convert your compiled circuit into its textual representation by converting it to string:
+
+<!--pytest-codeblocks:skip-->
+```python
+str(circuit)
+```
+
+If you just want to see the output on your terminal, you can directly print it as well:
+
+<!--pytest-codeblocks:skip-->
+```python
+print(circuit)
+```