Merge remote-tracking branch 'origin/MAGETWO-93033' into 2.1.16-develop-pr56

Author: OlgaVasyltsun

app/code/Magento/Email/view/frontend/email/header.html

@@ -43,8 +43,6 @@
 
                                 {{if logo_height}}
                                     height="{{var logo_height}}"
-                                {{else}}
-                                    height="52"
                                 {{/if}}
 
                                 src="{{var logo_url}}"