7.0.X, 7.1.X, Master
1) Created a tag for the site by following.
Control Panel -> Sites -> Sites -> Sample(Site name) -> Click on options -> Edit -> Categorization -> Tags -> Add (tag name - info)
2) Added a Tag cloud portlet and in configuration selected the Asset type as site. (Tag cloud portlet -> Cllick on options -> Configuration -> Setup -> Asset type -> site.)
Expected behavior: "Site" should not be an option for the "Asset Type" field.
Actual behavior: Site is an option.
Site option is available in Branch(5d4156ed0efa582b07526a5a902372e1e2f81049)
Site option is available in Master(c3308dbdcef28f54b8a2feb162656f0627a5a599)