Fix broken regex

This sed invocation uses extended regex syntax (i.e., un-escaped `|` and
parentheses capture groups) without the -E flag.

scipy.spec

@@ -157,7 +157,7 @@ for f in $(grep -Frl numpy.distutils); do
 done
 
 # Do not do benchmarking or coverage testing for RPM builds
-sed -i '/^[[:blank:]]*"(asv|pytest-cov)"/d' pyproject.toml
+sed -Ei '/^[[:blank:]]*"(asv|pytest-cov)"/d' pyproject.toml
 
 # No scikit-umfpack in Fedora
 sed -i '/^[[:blank:]]*"scikit-umfpack"/d' pyproject.toml