Revert "WL-2966 Adds a message if there is likely to be blocked mixed web content in an iframe in a popup."

This reverts commit 4c3eb7d3122b70c54a2529d390b4f28511e3922a.

Conflicts:
	web-tool/tool/src/bundle/iframe.properties
	web-tool/tool/src/webapp/vm/web/chef_iframe.vm
Revert "WL-3002 Changing text of Web Content message to reflect the possibility that mixed content is not in fact blocked."

This reverts commit daacee95eb1d11cb1df2c365bf2d9eafe5188ab2.