chore: Remove deprecated dependency_links from setup

* pdfkit dep is already being fulfilled by requirements.txt
* ref: https://stackoverflow.com/questions/12518499/pip-ignores-dependency-links-in-setup-py

setup.py

@@ -53,7 +53,6 @@ setup(
 	zip_safe=False,
 	include_package_data=True,
 	install_requires=install_requires,
-	dependency_links=["https://github.com/frappe/python-pdfkit.git#egg=pdfkit"],
 	cmdclass={"clean": CleanCommand},
 	python_requires=">=3.8",
 )