Remove meta tag in embed report

Is there a setting I can do for remove some meta tag from html report?

When I render a report with http://myserver/reports/report/folder/reportname?rs:embed=true&rc:toolbar=false it render with the following meta tag:

<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" />

I render this report in a webview in mobile phones using the rest API and need remove this meta tag to allow user zoom in/out the report.