Description: remove testpaths

In the Debian build environment, the tests are not where it says

Author: Rebecca N. Palmer <rebecca_palmer@zoho.com>
Forwarded: not-needed

--- rpy2-3.6.2.orig/pyproject.toml
+++ rpy2-3.6.2/pyproject.toml
@@ -62,4 +62,3 @@ namespaces = true
 
 [tool.pytest.ini_options]
 minversion = "6.0"
-testpaths = ["rpy2/tests"]