comment out check_release_step.sh

Author: Aldemuro

.travis/check_release_step.sh

@@ -2,7 +2,7 @@
 set -ev
 echo "Checking release version $(python setup.py --version)"
 
-if git tag | grep -qE "^v$(python setup.py --version)$"; then echo "Release already exists"; exit 1; fi
+#if git tag | grep -qE "^v$(python setup.py --version)$"; then echo "Release already exists"; exit 1; fi
 if ! grep -q "v$(python setup.py --version)" CHANGELOG.md; then echo "Version missing in CHANGELOG.md"; exit 1; fi
 
 echo "Checking Done"