Revert "LPS-37502 SF"

This reverts commit 95b4da6557c310a445d035619f16294a827e29c2.
Revert "LPS-37502 Change limit values for delta. These values have been calculated as the average value of 20 executions (see http://issues.liferay.com/browse/LPS-37502)"

This reverts commit 9746b1ad5ad475d14c74c972e3ea86c95acc3310.
Revert "LPS-35724 Keep the interface"

This reverts commit e83be88058f30ffad2aa3064039933cde5ad5772.
Revert "LPS-35724 Insecure usage of random generator in portal"

This reverts commit 4b1d0de7a91e990528a94423e6e12a72f748eda0.