remove duplicate import

ApacheTomcatDataSource is imported twice

Author: sify21

vulnerabilities/importers/__init__.py

@@ -47,5 +47,4 @@
 from vulnerabilities.importers.suse_scores import SUSESeverityScoreDataSource
 from vulnerabilities.importers.ubuntu import UbuntuDataSource
 from vulnerabilities.importers.ubuntu_usn import UbuntuUSNDataSource
-from vulnerabilities.importers.apache_tomcat import ApacheTomcatDataSource
 from vulnerabilities.importers.istio import IstioDataSource