ci: Remove unnecessary include of py.typed from pyproject.toml (#37)

Not necessary for example according to the following blogpost:

https://blog.whtsky.me/tech/2021/dont-forget-py.typed-for-your-typed-python-package/

Also I tested it in another repository to make sure.

pyproject.toml

@@ -11,7 +11,6 @@ license = "ISC"
 readme = "README.md"
 repository = "https://github.com/trallnag/prometheus-fastapi-instrumentator"
 keywords = ["prometheus", "instrumentation", "fastapi", "exporter", "metrics"]
-include = ["src/prometheus_fastapi_instrumentator/py.typed"]
 
 [tool.poetry.dependencies]
 python = ">= 3.7.0, < 4.0.0"