disable version lookup from .git

Installing libioc as git submodule caused trouble because the .git reference file pointed to the parents ../.git/modules/libioc path that does not exist in temporary directories.
The version is looked up from the libioc/VERSION file anyway, so .git tag detection is not required

Author: gronke

setup.py

@@ -31,6 +31,12 @@
 except ModuleNotFoundError:
     from pip.req import parse_requirements
 
+try:
+    import setuptools_scm.integration
+    setuptools_scm.integration.find_files = lambda _: []
+except ImportError:
+    pass
+
 
 def _read_requirements(
     filename: str="requirements.txt"