chore: remove invalid *.py,cover pattern from .aiignore (#2302)

Signed-off-by: Radek Ježek <radek.jezek@ibm.com>

Author: jezekra1

.aiignore

@@ -84,7 +84,6 @@ htmlcov/
 nosetests.xml
 coverage.xml
 *.cover
-*.py,cover
 .hypothesis/
 .pytest_cache/
 cover/