That phrase, theology of the cross, is used to refer to the this way of thinking. Theology of glory puts the cross away and instead focuses on the glory of we Christians. Once you become a Christian, you are in pure glory. It is thought there is no more need to mention the cross, or sin, and even in some cases no need to mention Christ. The cross is replaced by glory.
Sin is replaced by supposed sinlessness.
There is also no talk of suffering in a Christian life. In fact, according to the theology of glory, if you suffer, then you must be doing something wrong in your faith. If you are ill, then you must not be praying enough. If you are poor, you must have brought that on yourself. This type of thinking can saturate most areas of our life.