Remove unnecessary error handling

ee/app/services/security/store_report_service.rb

@@ -17,7 +17,6 @@ module Security
     def execute
       # Ensure we're not trying to insert data twice for this report
       return error("#{@report.type} report already stored for this pipeline, skipping...") if executed?
-      raise ParseError, 'JSON parsing failed' if report.error.is_a?(Gitlab::Ci::Parsers::Security::Common::SecurityReportParserError)
 
       vulnerability_ids = create_all_vulnerabilities!
       mark_as_resolved_except(vulnerability_ids)