We do not need to check source format.

--- dunamai-1.25.0/pyproject.toml.orig
+++ dunamai-1.25.0/pyproject.toml
@@ -30,7 +30,6 @@
     { version = "^7.2", python = "^3.7" },
     { version = "^3.0", python = ">=3.5,<3.7" },
 ]
-black = { version = "22.1.0", python = "^3.7" }
 
 [tool.poetry.scripts]
 dunamai = 'dunamai.__main__:main'