remove pybind11 to readd as subtree

examples/knxPython/pybind11/tests/pytest.ini

@@ -1,15 +0,0 @@
-[pytest]
-minversion = 3.0
-norecursedirs = test_cmake_build test_embed
-addopts =
-    # show summary of skipped tests
-    -rs
-    # capture only Python print and C++ py::print, but not C output (low-level Python errors)
-    --capture=sys
-filterwarnings =
-    # make warnings into errors but ignore certain third-party extension issues
-    error
-    # importing scipy submodules on some version of Python
-    ignore::ImportWarning
-    # bogus numpy ABI warning (see numpy/#432)
-    ignore:.*numpy.dtype size changed.*:RuntimeWarning