Include all files in sdist archives

Remove the restriction on files inclduded in sdist archives in order
to include documentation sources and tests there.  This is the default
hatchling behavior and it is helpful to packagers (such as Linux
distributions or Conda) as it permits using sdist archives to do
packaging (instead of GitHub archives that are not guaranteed
to be reproducible).  Most of the ordinary users will not be affected
since starlette is a pure Python package and therefore pip will prefer
wheels to install it everywhere.

pyproject.toml

@@ -43,12 +43,6 @@ dependencies = [
 Download = "https://pypi.org/project/django-debug-toolbar/"
 Homepage = "https://github.com/jazzband/django-debug-toolbar"
 
-[tool.hatch.build.targets.sdist]
-include = [
-    "/debug_toolbar",
-    "/CONTRIBUTING.md",
-]
-
 [tool.hatch.build.targets.wheel]
 packages = ["debug_toolbar"]